Home / 1,389,823,364.20-1,917,526,168.74-802,898,349.16

Finding the Fourth Proportional to 1,389,823,364.20, 1,917,526,168.74 and 802,898,349.16

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Solution

The fourth proportional to 1,389,823,364.20, 1,917,526,168.74 and 802,898,349.16 is: 1,107,751,268.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,823,364.20 : 1,917,526,168.74 = 802,898,349.16 : x
  2. Step 2: Convert to fraction form
    1,389,823,364.20/1,917,526,168.74 = 802,898,349.16/x
  3. Step 3: Cross multiply
    1,389,823,364.20x = 1,917,526,168.74 × 802,898,349.16
  4. Step 4: Simplify right side
    1,389,823,364.20x = 1,539,578,595,352,445,440
  5. Step 5: Solve for x
    x = 1,539,578,595,352,445,440/1,389,823,364.20
  6. Step 6: Final answer
    x = 1,107,751,268.98

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Double scale
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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.