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Finding the Fourth Proportional to 630,902.80, 870,659.04 and 344,434.96

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Solution

The fourth proportional to 630,902.80, 870,659.04 and 344,434.96 is: 475,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,902.80 : 870,659.04 = 344,434.96 : x
  2. Step 2: Convert to fraction form
    630,902.80/870,659.04 = 344,434.96/x
  3. Step 3: Cross multiply
    630,902.80x = 870,659.04 × 344,434.96
  4. Step 4: Simplify right side
    630,902.80x = 299,885,411,616.04
  5. Step 5: Solve for x
    x = 299,885,411,616.04/630,902.80
  6. Step 6: Final answer
    x = 475,327.44

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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.