Home / 687,291.53-1,030,522.98-308,143.70

Finding the Fourth Proportional to 687,291.53, 1,030,522.98 and 308,143.70

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Solution

The fourth proportional to 687,291.53, 1,030,522.98 and 308,143.70 is: 462,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,291.53 : 1,030,522.98 = 308,143.70 : x
  2. Step 2: Convert to fraction form
    687,291.53/1,030,522.98 = 308,143.70/x
  3. Step 3: Cross multiply
    687,291.53x = 1,030,522.98 × 308,143.70
  4. Step 4: Simplify right side
    687,291.53x = 317,549,158,839.61
  5. Step 5: Solve for x
    x = 317,549,158,839.61/687,291.53
  6. Step 6: Final answer
    x = 462,029.78

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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.