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Finding the Fourth Proportional to 568,011.60, 783,854.28 and 313,390.80

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Solution

The fourth proportional to 568,011.60, 783,854.28 and 313,390.80 is: 432,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,011.60 : 783,854.28 = 313,390.80 : x
  2. Step 2: Convert to fraction form
    568,011.60/783,854.28 = 313,390.80/x
  3. Step 3: Cross multiply
    568,011.60x = 783,854.28 × 313,390.80
  4. Step 4: Simplify right side
    568,011.60x = 245,652,719,892.62
  5. Step 5: Solve for x
    x = 245,652,719,892.62/568,011.60
  6. Step 6: Final answer
    x = 432,478.35

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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.