Home / 1,690,738-2,536,254.56-428,565.52

Finding the Fourth Proportional to 1,690,738, 2,536,254.56 and 428,565.52

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Solution

The fourth proportional to 1,690,738, 2,536,254.56 and 428,565.52 is: 642,885.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,738 : 2,536,254.56 = 428,565.52 : x
  2. Step 2: Convert to fraction form
    1,690,738/2,536,254.56 = 428,565.52/x
  3. Step 3: Cross multiply
    1,690,738x = 2,536,254.56 × 428,565.52
  4. Step 4: Simplify right side
    1,690,738x = 1,086,951,254,358.77
  5. Step 5: Solve for x
    x = 1,086,951,254,358.77/1,690,738
  6. Step 6: Final answer
    x = 642,885.68

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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.