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Finding the Fourth Proportional to 564,073.75, 778,421.78 and 309,425.55

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Solution

The fourth proportional to 564,073.75, 778,421.78 and 309,425.55 is: 427,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,073.75 : 778,421.78 = 309,425.55 : x
  2. Step 2: Convert to fraction form
    564,073.75/778,421.78 = 309,425.55/x
  3. Step 3: Cross multiply
    564,073.75x = 778,421.78 × 309,425.55
  4. Step 4: Simplify right side
    564,073.75x = 240,863,587,408.48
  5. Step 5: Solve for x
    x = 240,863,587,408.48/564,073.75
  6. Step 6: Final answer
    x = 427,007.26

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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.