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Finding the Fourth Proportional to 553,706.97, 830,663.91 and 381,325.66

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Solution

The fourth proportional to 553,706.97, 830,663.91 and 381,325.66 is: 572,059.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,706.97 : 830,663.91 = 381,325.66 : x
  2. Step 2: Convert to fraction form
    553,706.97/830,663.91 = 381,325.66/x
  3. Step 3: Cross multiply
    553,706.97x = 830,663.91 × 381,325.66
  4. Step 4: Simplify right side
    553,706.97x = 316,753,466,152.20
  5. Step 5: Solve for x
    x = 316,753,466,152.20/553,706.97
  6. Step 6: Final answer
    x = 572,059.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.