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Finding the Fourth Proportional to 610,385.40, 842,341.95 and 338,464.76

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Solution

The fourth proportional to 610,385.40, 842,341.95 and 338,464.76 is: 467,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,385.40 : 842,341.95 = 338,464.76 : x
  2. Step 2: Convert to fraction form
    610,385.40/842,341.95 = 338,464.76/x
  3. Step 3: Cross multiply
    610,385.40x = 842,341.95 × 338,464.76
  4. Step 4: Simplify right side
    610,385.40x = 285,103,061,732.97
  5. Step 5: Solve for x
    x = 285,103,061,732.97/610,385.40
  6. Step 6: Final answer
    x = 467,086.96

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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.