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Finding the Fourth Proportional to 891,663.20, 1,337,656.80 and 292,457.60

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Solution

The fourth proportional to 891,663.20, 1,337,656.80 and 292,457.60 is: 438,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,663.20 : 1,337,656.80 = 292,457.60 : x
  2. Step 2: Convert to fraction form
    891,663.20/1,337,656.80 = 292,457.60/x
  3. Step 3: Cross multiply
    891,663.20x = 1,337,656.80 × 292,457.60
  4. Step 4: Simplify right side
    891,663.20x = 391,207,897,351.68
  5. Step 5: Solve for x
    x = 391,207,897,351.68/891,663.20
  6. Step 6: Final answer
    x = 438,739.53

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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.