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Finding the Fourth Proportional to 630,748.29, 870,545.49 and 376,115.88

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Solution

The fourth proportional to 630,748.29, 870,545.49 and 376,115.88 is: 519,107.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,748.29 : 870,545.49 = 376,115.88 : x
  2. Step 2: Convert to fraction form
    630,748.29/870,545.49 = 376,115.88/x
  3. Step 3: Cross multiply
    630,748.29x = 870,545.49 × 376,115.88
  4. Step 4: Simplify right side
    630,748.29x = 327,425,983,051.38
  5. Step 5: Solve for x
    x = 327,425,983,051.38/630,748.29
  6. Step 6: Final answer
    x = 519,107.21

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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.