Home / 1,005,998.90-1,508,998.35-687,134.30

Finding the Fourth Proportional to 1,005,998.90, 1,508,998.35 and 687,134.30

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Solution

The fourth proportional to 1,005,998.90, 1,508,998.35 and 687,134.30 is: 1,030,701.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,998.90 : 1,508,998.35 = 687,134.30 : x
  2. Step 2: Convert to fraction form
    1,005,998.90/1,508,998.35 = 687,134.30/x
  3. Step 3: Cross multiply
    1,005,998.90x = 1,508,998.35 × 687,134.30
  4. Step 4: Simplify right side
    1,005,998.90x = 1,036,884,524,928.41
  5. Step 5: Solve for x
    x = 1,036,884,524,928.41/1,005,998.90
  6. Step 6: Final answer
    x = 1,030,701.45

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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.