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Finding the Fourth Proportional to 527,212.80, 727,552.40 and 285,495.44

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Solution

The fourth proportional to 527,212.80, 727,552.40 and 285,495.44 is: 393,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,212.80 : 727,552.40 = 285,495.44 : x
  2. Step 2: Convert to fraction form
    527,212.80/727,552.40 = 285,495.44/x
  3. Step 3: Cross multiply
    527,212.80x = 727,552.40 × 285,495.44
  4. Step 4: Simplify right side
    527,212.80x = 207,712,892,561.06
  5. Step 5: Solve for x
    x = 207,712,892,561.06/527,212.80
  6. Step 6: Final answer
    x = 393,983.02

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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.