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Finding the Fourth Proportional to 630,612.47, 870,263.70 and 344,150.98

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Solution

The fourth proportional to 630,612.47, 870,263.70 and 344,150.98 is: 474,938.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,612.47 : 870,263.70 = 344,150.98 : x
  2. Step 2: Convert to fraction form
    630,612.47/870,263.70 = 344,150.98/x
  3. Step 3: Cross multiply
    630,612.47x = 870,263.70 × 344,150.98
  4. Step 4: Simplify right side
    630,612.47x = 299,502,101,747.20
  5. Step 5: Solve for x
    x = 299,502,101,747.20/630,612.47
  6. Step 6: Final answer
    x = 474,938.44

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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.