Home / 765,403.20-1,148,244.12-316,036.80

Finding the Fourth Proportional to 765,403.20, 1,148,244.12 and 316,036.80

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Solution

The fourth proportional to 765,403.20, 1,148,244.12 and 316,036.80 is: 474,112.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,403.20 : 1,148,244.12 = 316,036.80 : x
  2. Step 2: Convert to fraction form
    765,403.20/1,148,244.12 = 316,036.80/x
  3. Step 3: Cross multiply
    765,403.20x = 1,148,244.12 × 316,036.80
  4. Step 4: Simplify right side
    765,403.20x = 362,887,397,303.62
  5. Step 5: Solve for x
    x = 362,887,397,303.62/765,403.20
  6. Step 6: Final answer
    x = 474,112.73

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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.