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Finding the Fourth Proportional to 704,613.93, 972,619.38 and 418,134

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Solution

The fourth proportional to 704,613.93, 972,619.38 and 418,134 is: 577,174.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,613.93 : 972,619.38 = 418,134 : x
  2. Step 2: Convert to fraction form
    704,613.93/972,619.38 = 418,134/x
  3. Step 3: Cross multiply
    704,613.93x = 972,619.38 × 418,134
  4. Step 4: Simplify right side
    704,613.93x = 406,685,231,836.92
  5. Step 5: Solve for x
    x = 406,685,231,836.92/704,613.93
  6. Step 6: Final answer
    x = 577,174.56

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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.