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Finding the Fourth Proportional to 615,688.61, 849,641.99 and 343,760.67

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Solution

The fourth proportional to 615,688.61, 849,641.99 and 343,760.67 is: 474,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,688.61 : 849,641.99 = 343,760.67 : x
  2. Step 2: Convert to fraction form
    615,688.61/849,641.99 = 343,760.67/x
  3. Step 3: Cross multiply
    615,688.61x = 849,641.99 × 343,760.67
  4. Step 4: Simplify right side
    615,688.61x = 292,073,498,023.73
  5. Step 5: Solve for x
    x = 292,073,498,023.73/615,688.61
  6. Step 6: Final answer
    x = 474,385.10

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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.