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Finding the Fourth Proportional to 630,609.48, 870,259.68 and 344,148.12

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Solution

The fourth proportional to 630,609.48, 870,259.68 and 344,148.12 is: 474,934.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,609.48 : 870,259.68 = 344,148.12 : x
  2. Step 2: Convert to fraction form
    630,609.48/870,259.68 = 344,148.12/x
  3. Step 3: Cross multiply
    630,609.48x = 870,259.68 × 344,148.12
  4. Step 4: Simplify right side
    630,609.48x = 299,498,232,783.80
  5. Step 5: Solve for x
    x = 299,498,232,783.80/630,609.48
  6. Step 6: Final answer
    x = 474,934.56

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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.