Home / 525,678.13-788,517.12-126,318.91

Finding the Fourth Proportional to 525,678.13, 788,517.12 and 126,318.91

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Solution

The fourth proportional to 525,678.13, 788,517.12 and 126,318.91 is: 189,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,678.13 : 788,517.12 = 126,318.91 : x
  2. Step 2: Convert to fraction form
    525,678.13/788,517.12 = 126,318.91/x
  3. Step 3: Cross multiply
    525,678.13x = 788,517.12 × 126,318.91
  4. Step 4: Simplify right side
    525,678.13x = 99,604,620,404.21
  5. Step 5: Solve for x
    x = 99,604,620,404.21/525,678.13
  6. Step 6: Final answer
    x = 189,478.34

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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.