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Finding the Fourth Proportional to 630,587.96, 870,229.76 and 344,126.50

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Solution

The fourth proportional to 630,587.96, 870,229.76 and 344,126.50 is: 474,904.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,587.96 : 870,229.76 = 344,126.50 : x
  2. Step 2: Convert to fraction form
    630,587.96/870,229.76 = 344,126.50/x
  3. Step 3: Cross multiply
    630,587.96x = 870,229.76 × 344,126.50
  4. Step 4: Simplify right side
    630,587.96x = 299,469,120,189.38
  5. Step 5: Solve for x
    x = 299,469,120,189.38/630,587.96
  6. Step 6: Final answer
    x = 474,904.60

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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.