Home / 528,508.68-729,338.27-286,785.10

Finding the Fourth Proportional to 528,508.68, 729,338.27 and 286,785.10

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Solution

The fourth proportional to 528,508.68, 729,338.27 and 286,785.10 is: 395,761.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,508.68 : 729,338.27 = 286,785.10 : x
  2. Step 2: Convert to fraction form
    528,508.68/729,338.27 = 286,785.10/x
  3. Step 3: Cross multiply
    528,508.68x = 729,338.27 × 286,785.10
  4. Step 4: Simplify right side
    528,508.68x = 209,163,348,695.78
  5. Step 5: Solve for x
    x = 209,163,348,695.78/528,508.68
  6. Step 6: Final answer
    x = 395,761.43

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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.