Home / 528,724.18-729,646.95-287,007.22

Finding the Fourth Proportional to 528,724.18, 729,646.95 and 287,007.22

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Solution

The fourth proportional to 528,724.18, 729,646.95 and 287,007.22 is: 396,074.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,724.18 : 729,646.95 = 287,007.22 : x
  2. Step 2: Convert to fraction form
    528,724.18/729,646.95 = 287,007.22/x
  3. Step 3: Cross multiply
    528,724.18x = 729,646.95 × 287,007.22
  4. Step 4: Simplify right side
    528,724.18x = 209,413,942,700.98
  5. Step 5: Solve for x
    x = 209,413,942,700.98/528,724.18
  6. Step 6: Final answer
    x = 396,074.08

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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.