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Finding the Fourth Proportional to 630,649.50, 870,314.76 and 344,187.96

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Solution

The fourth proportional to 630,649.50, 870,314.76 and 344,187.96 is: 474,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,649.50 : 870,314.76 = 344,187.96 : x
  2. Step 2: Convert to fraction form
    630,649.50/870,314.76 = 344,187.96/x
  3. Step 3: Cross multiply
    630,649.50x = 870,314.76 × 344,187.96
  4. Step 4: Simplify right side
    630,649.50x = 299,551,861,802.29
  5. Step 5: Solve for x
    x = 299,551,861,802.29/630,649.50
  6. Step 6: Final answer
    x = 474,989.45

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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.