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Finding the Fourth Proportional to 672,564,697.67, 928,139,680.84 and 375,206,940.85

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Solution

The fourth proportional to 672,564,697.67, 928,139,680.84 and 375,206,940.85 is: 517,785,800.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,564,697.67 : 928,139,680.84 = 375,206,940.85 : x
  2. Step 2: Convert to fraction form
    672,564,697.67/928,139,680.84 = 375,206,940.85/x
  3. Step 3: Cross multiply
    672,564,697.67x = 928,139,680.84 × 375,206,940.85
  4. Step 4: Simplify right side
    672,564,697.67x = 348,244,450,327,595,776
  5. Step 5: Solve for x
    x = 348,244,450,327,595,776/672,564,697.67
  6. Step 6: Final answer
    x = 517,785,800.44

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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.