Home / 781,505.40-1,172,222.88-325,909.02

Finding the Fourth Proportional to 781,505.40, 1,172,222.88 and 325,909.02

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Solution

The fourth proportional to 781,505.40, 1,172,222.88 and 325,909.02 is: 488,848.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,505.40 : 1,172,222.88 = 325,909.02 : x
  2. Step 2: Convert to fraction form
    781,505.40/1,172,222.88 = 325,909.02/x
  3. Step 3: Cross multiply
    781,505.40x = 1,172,222.88 × 325,909.02
  4. Step 4: Simplify right side
    781,505.40x = 382,038,010,042.38
  5. Step 5: Solve for x
    x = 382,038,010,042.38/781,505.40
  6. Step 6: Final answer
    x = 488,848.84

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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.