Home / 527,503.10-727,911.24-309,688.83

Finding the Fourth Proportional to 527,503.10, 727,911.24 and 309,688.83

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Solution

The fourth proportional to 527,503.10, 727,911.24 and 309,688.83 is: 427,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,503.10 : 727,911.24 = 309,688.83 : x
  2. Step 2: Convert to fraction form
    527,503.10/727,911.24 = 309,688.83/x
  3. Step 3: Cross multiply
    527,503.10x = 727,911.24 × 309,688.83
  4. Step 4: Simplify right side
    527,503.10x = 225,425,979,098.12
  5. Step 5: Solve for x
    x = 225,425,979,098.12/527,503.10
  6. Step 6: Final answer
    x = 427,345.32

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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.