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Finding the Fourth Proportional to 527,018.40, 727,285.24 and 285,300.80

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Solution

The fourth proportional to 527,018.40, 727,285.24 and 285,300.80 is: 393,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,018.40 : 727,285.24 = 285,300.80 : x
  2. Step 2: Convert to fraction form
    527,018.40/727,285.24 = 285,300.80/x
  3. Step 3: Cross multiply
    527,018.40x = 727,285.24 × 285,300.80
  4. Step 4: Simplify right side
    527,018.40x = 207,495,057,520.39
  5. Step 5: Solve for x
    x = 207,495,057,520.39/527,018.40
  6. Step 6: Final answer
    x = 393,715.01

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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.