Home / 1,152,610.56-1,590,412.32-643,312.80

Finding the Fourth Proportional to 1,152,610.56, 1,590,412.32 and 643,312.80

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Solution

The fourth proportional to 1,152,610.56, 1,590,412.32 and 643,312.80 is: 887,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,610.56 : 1,590,412.32 = 643,312.80 : x
  2. Step 2: Convert to fraction form
    1,152,610.56/1,590,412.32 = 643,312.80/x
  3. Step 3: Cross multiply
    1,152,610.56x = 1,590,412.32 × 643,312.80
  4. Step 4: Simplify right side
    1,152,610.56x = 1,023,132,602,733.70
  5. Step 5: Solve for x
    x = 1,023,132,602,733.70/1,152,610.56
  6. Step 6: Final answer
    x = 887,665.48

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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.