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Finding the Fourth Proportional to 458,298.40, 686,065.20 and 403,002.40

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Solution

The fourth proportional to 458,298.40, 686,065.20 and 403,002.40 is: 603,287.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,298.40 : 686,065.20 = 403,002.40 : x
  2. Step 2: Convert to fraction form
    458,298.40/686,065.20 = 403,002.40/x
  3. Step 3: Cross multiply
    458,298.40x = 686,065.20 × 403,002.40
  4. Step 4: Simplify right side
    458,298.40x = 276,485,922,156.48
  5. Step 5: Solve for x
    x = 276,485,922,156.48/458,298.40
  6. Step 6: Final answer
    x = 603,287.99

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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.