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Finding the Fourth Proportional to 786,909.60, 1,179,003.60 and 365,320.80

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Solution

The fourth proportional to 786,909.60, 1,179,003.60 and 365,320.80 is: 547,349.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,909.60 : 1,179,003.60 = 365,320.80 : x
  2. Step 2: Convert to fraction form
    786,909.60/1,179,003.60 = 365,320.80/x
  3. Step 3: Cross multiply
    786,909.60x = 1,179,003.60 × 365,320.80
  4. Step 4: Simplify right side
    786,909.60x = 430,714,538,354.88
  5. Step 5: Solve for x
    x = 430,714,538,354.88/786,909.60
  6. Step 6: Final answer
    x = 547,349.45

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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.