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Finding the Fourth Proportional to 403,325.20, 604,987.80 and 383,642.20

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Solution

The fourth proportional to 403,325.20, 604,987.80 and 383,642.20 is: 575,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,325.20 : 604,987.80 = 383,642.20 : x
  2. Step 2: Convert to fraction form
    403,325.20/604,987.80 = 383,642.20/x
  3. Step 3: Cross multiply
    403,325.20x = 604,987.80 × 383,642.20
  4. Step 4: Simplify right side
    403,325.20x = 232,098,850,565.16
  5. Step 5: Solve for x
    x = 232,098,850,565.16/403,325.20
  6. Step 6: Final answer
    x = 575,463.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.