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Finding the Fourth Proportional to 630,839.61, 870,541.92 and 580,057.47

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Solution

The fourth proportional to 630,839.61, 870,541.92 and 580,057.47 is: 800,463.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,839.61 : 870,541.92 = 580,057.47 : x
  2. Step 2: Convert to fraction form
    630,839.61/870,541.92 = 580,057.47/x
  3. Step 3: Cross multiply
    630,839.61x = 870,541.92 × 580,057.47
  4. Step 4: Simplify right side
    630,839.61x = 504,964,343,644.14
  5. Step 5: Solve for x
    x = 504,964,343,644.14/630,839.61
  6. Step 6: Final answer
    x = 800,463.91

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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.