Home / 525,780.52-788,670.40-126,421.16

Finding the Fourth Proportional to 525,780.52, 788,670.40 and 126,421.16

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Solution

The fourth proportional to 525,780.52, 788,670.40 and 126,421.16 is: 189,631.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,780.52 : 788,670.40 = 126,421.16 : x
  2. Step 2: Convert to fraction form
    525,780.52/788,670.40 = 126,421.16/x
  3. Step 3: Cross multiply
    525,780.52x = 788,670.40 × 126,421.16
  4. Step 4: Simplify right side
    525,780.52x = 99,704,626,825.66
  5. Step 5: Solve for x
    x = 99,704,626,825.66/525,780.52
  6. Step 6: Final answer
    x = 189,631.65

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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.