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Finding the Fourth Proportional to 478,337.40, 716,123.70 and 291,713.40

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Solution

The fourth proportional to 478,337.40, 716,123.70 and 291,713.40 is: 436,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,337.40 : 716,123.70 = 291,713.40 : x
  2. Step 2: Convert to fraction form
    478,337.40/716,123.70 = 291,713.40/x
  3. Step 3: Cross multiply
    478,337.40x = 716,123.70 × 291,713.40
  4. Step 4: Simplify right side
    478,337.40x = 208,902,879,347.58
  5. Step 5: Solve for x
    x = 208,902,879,347.58/478,337.40
  6. Step 6: Final answer
    x = 436,727.05

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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.