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Finding the Fourth Proportional to 438,909.12, 605,452.07 and 357,325.13

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Solution

The fourth proportional to 438,909.12, 605,452.07 and 357,325.13 is: 492,911.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,909.12 : 605,452.07 = 357,325.13 : x
  2. Step 2: Convert to fraction form
    438,909.12/605,452.07 = 357,325.13/x
  3. Step 3: Cross multiply
    438,909.12x = 605,452.07 × 357,325.13
  4. Step 4: Simplify right side
    438,909.12x = 216,343,237,078.08
  5. Step 5: Solve for x
    x = 216,343,237,078.08/438,909.12
  6. Step 6: Final answer
    x = 492,911.24

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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.