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Finding the Fourth Proportional to 557,538.39, 769,398.75 and 302,891.40

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Solution

The fourth proportional to 557,538.39, 769,398.75 and 302,891.40 is: 417,987.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,538.39 : 769,398.75 = 302,891.40 : x
  2. Step 2: Convert to fraction form
    557,538.39/769,398.75 = 302,891.40/x
  3. Step 3: Cross multiply
    557,538.39x = 769,398.75 × 302,891.40
  4. Step 4: Simplify right side
    557,538.39x = 233,044,264,545.75
  5. Step 5: Solve for x
    x = 233,044,264,545.75/557,538.39
  6. Step 6: Final answer
    x = 417,987.83

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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.