Home / 1,432,690.75-2,149,036.10-421,812.86

Finding the Fourth Proportional to 1,432,690.75, 2,149,036.10 and 421,812.86

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Solution

The fourth proportional to 1,432,690.75, 2,149,036.10 and 421,812.86 is: 632,719.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,690.75 : 2,149,036.10 = 421,812.86 : x
  2. Step 2: Convert to fraction form
    1,432,690.75/2,149,036.10 = 421,812.86/x
  3. Step 3: Cross multiply
    1,432,690.75x = 2,149,036.10 × 421,812.86
  4. Step 4: Simplify right side
    1,432,690.75x = 906,491,061,475.18
  5. Step 5: Solve for x
    x = 906,491,061,475.18/1,432,690.75
  6. Step 6: Final answer
    x = 632,719.28

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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.