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Finding the Fourth Proportional to 555,590.20, 766,840.28 and 314,012.90

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Solution

The fourth proportional to 555,590.20, 766,840.28 and 314,012.90 is: 433,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,590.20 : 766,840.28 = 314,012.90 : x
  2. Step 2: Convert to fraction form
    555,590.20/766,840.28 = 314,012.90/x
  3. Step 3: Cross multiply
    555,590.20x = 766,840.28 × 314,012.90
  4. Step 4: Simplify right side
    555,590.20x = 240,797,740,159.61
  5. Step 5: Solve for x
    x = 240,797,740,159.61/555,590.20
  6. Step 6: Final answer
    x = 433,408.90

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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.