Home / 1,087,407.40-1,628,000.70-667,503.40

Finding the Fourth Proportional to 1,087,407.40, 1,628,000.70 and 667,503.40

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Solution

The fourth proportional to 1,087,407.40, 1,628,000.70 and 667,503.40 is: 999,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,407.40 : 1,628,000.70 = 667,503.40 : x
  2. Step 2: Convert to fraction form
    1,087,407.40/1,628,000.70 = 667,503.40/x
  3. Step 3: Cross multiply
    1,087,407.40x = 1,628,000.70 × 667,503.40
  4. Step 4: Simplify right side
    1,087,407.40x = 1,086,696,002,452.38
  5. Step 5: Solve for x
    x = 1,086,696,002,452.38/1,087,407.40
  6. Step 6: Final answer
    x = 999,345.79

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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.