Home / 1,389,823,363.20-1,917,526,167.36-802,898,348.16

Finding the Fourth Proportional to 1,389,823,363.20, 1,917,526,167.36 and 802,898,348.16

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Solution

The fourth proportional to 1,389,823,363.20, 1,917,526,167.36 and 802,898,348.16 is: 1,107,751,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,823,363.20 : 1,917,526,167.36 = 802,898,348.16 : x
  2. Step 2: Convert to fraction form
    1,389,823,363.20/1,917,526,167.36 = 802,898,348.16/x
  3. Step 3: Cross multiply
    1,389,823,363.20x = 1,917,526,167.36 × 802,898,348.16
  4. Step 4: Simplify right side
    1,389,823,363.20x = 1,539,578,592,326,919,680
  5. Step 5: Solve for x
    x = 1,539,578,592,326,919,680/1,389,823,363.20
  6. Step 6: Final answer
    x = 1,107,751,267.60

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Double scale
Find fourth proportional to 1,389,823,364.20, 1,917,526,168.74 and 802,898,349.16
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.