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Finding the Fourth Proportional to 518,624.82, 715,699.59 and 300,877.53

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Solution

The fourth proportional to 518,624.82, 715,699.59 and 300,877.53 is: 415,209.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,624.82 : 715,699.59 = 300,877.53 : x
  2. Step 2: Convert to fraction form
    518,624.82/715,699.59 = 300,877.53/x
  3. Step 3: Cross multiply
    518,624.82x = 715,699.59 × 300,877.53
  4. Step 4: Simplify right side
    518,624.82x = 215,337,924,861.21
  5. Step 5: Solve for x
    x = 215,337,924,861.21/518,624.82
  6. Step 6: Final answer
    x = 415,209.45

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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.