Home / 459,780.20-689,670.30-127,356.20

Finding the Fourth Proportional to 459,780.20, 689,670.30 and 127,356.20

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Solution

The fourth proportional to 459,780.20, 689,670.30 and 127,356.20 is: 191,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,780.20 : 689,670.30 = 127,356.20 : x
  2. Step 2: Convert to fraction form
    459,780.20/689,670.30 = 127,356.20/x
  3. Step 3: Cross multiply
    459,780.20x = 689,670.30 × 127,356.20
  4. Step 4: Simplify right side
    459,780.20x = 87,833,788,660.86
  5. Step 5: Solve for x
    x = 87,833,788,660.86/459,780.20
  6. Step 6: Final answer
    x = 191,034.30

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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.