Home / 528,788.48-729,733.68-287,073.28

Finding the Fourth Proportional to 528,788.48, 729,733.68 and 287,073.28

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Solution

The fourth proportional to 528,788.48, 729,733.68 and 287,073.28 is: 396,164.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,788.48 : 729,733.68 = 287,073.28 : x
  2. Step 2: Convert to fraction form
    528,788.48/729,733.68 = 287,073.28/x
  3. Step 3: Cross multiply
    528,788.48x = 729,733.68 × 287,073.28
  4. Step 4: Simplify right side
    528,788.48x = 209,487,041,044.07
  5. Step 5: Solve for x
    x = 209,487,041,044.07/528,788.48
  6. Step 6: Final answer
    x = 396,164.15

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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.