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Finding the Fourth Proportional to 527,018.65, 727,285.59 and 285,301.05

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Solution

The fourth proportional to 527,018.65, 727,285.59 and 285,301.05 is: 393,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,018.65 : 727,285.59 = 285,301.05 : x
  2. Step 2: Convert to fraction form
    527,018.65/727,285.59 = 285,301.05/x
  3. Step 3: Cross multiply
    527,018.65x = 727,285.59 × 285,301.05
  4. Step 4: Simplify right side
    527,018.65x = 207,495,342,476.87
  5. Step 5: Solve for x
    x = 207,495,342,476.87/527,018.65
  6. Step 6: Final answer
    x = 393,715.37

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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.