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Finding the Fourth Proportional to 607,926.80, 912,149.40 and 292,221.20

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Solution

The fourth proportional to 607,926.80, 912,149.40 and 292,221.20 is: 438,456.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,926.80 : 912,149.40 = 292,221.20 : x
  2. Step 2: Convert to fraction form
    607,926.80/912,149.40 = 292,221.20/x
  3. Step 3: Cross multiply
    607,926.80x = 912,149.40 × 292,221.20
  4. Step 4: Simplify right side
    607,926.80x = 266,549,392,247.28
  5. Step 5: Solve for x
    x = 266,549,392,247.28/607,926.80
  6. Step 6: Final answer
    x = 438,456.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.