Home / 528,966.50-729,979.06-287,251.16

Finding the Fourth Proportional to 528,966.50, 729,979.06 and 287,251.16

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Solution

The fourth proportional to 528,966.50, 729,979.06 and 287,251.16 is: 396,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,966.50 : 729,979.06 = 287,251.16 : x
  2. Step 2: Convert to fraction form
    528,966.50/729,979.06 = 287,251.16/x
  3. Step 3: Cross multiply
    528,966.50x = 729,979.06 × 287,251.16
  4. Step 4: Simplify right side
    528,966.50x = 209,687,331,760.71
  5. Step 5: Solve for x
    x = 209,687,331,760.71/528,966.50
  6. Step 6: Final answer
    x = 396,409.47

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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.