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Finding the Fourth Proportional to 403,351.20, 605,026.80 and 372,938.40

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Solution

The fourth proportional to 403,351.20, 605,026.80 and 372,938.40 is: 559,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,351.20 : 605,026.80 = 372,938.40 : x
  2. Step 2: Convert to fraction form
    403,351.20/605,026.80 = 372,938.40/x
  3. Step 3: Cross multiply
    403,351.20x = 605,026.80 × 372,938.40
  4. Step 4: Simplify right side
    403,351.20x = 225,637,726,749.12
  5. Step 5: Solve for x
    x = 225,637,726,749.12/403,351.20
  6. Step 6: Final answer
    x = 559,407.60

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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.