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Finding the Fourth Proportional to 634,165.89, 875,157.47 and 347,685.30

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Solution

The fourth proportional to 634,165.89, 875,157.47 and 347,685.30 is: 479,810.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,165.89 : 875,157.47 = 347,685.30 : x
  2. Step 2: Convert to fraction form
    634,165.89/875,157.47 = 347,685.30/x
  3. Step 3: Cross multiply
    634,165.89x = 875,157.47 × 347,685.30
  4. Step 4: Simplify right side
    634,165.89x = 304,279,385,765.76
  5. Step 5: Solve for x
    x = 304,279,385,765.76/634,165.89
  6. Step 6: Final answer
    x = 479,810.39

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Double scale
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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.