Home / 1,040,400.90-1,560,601.35-991,412.10

Finding the Fourth Proportional to 1,040,400.90, 1,560,601.35 and 991,412.10

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Solution

The fourth proportional to 1,040,400.90, 1,560,601.35 and 991,412.10 is: 1,487,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,400.90 : 1,560,601.35 = 991,412.10 : x
  2. Step 2: Convert to fraction form
    1,040,400.90/1,560,601.35 = 991,412.10/x
  3. Step 3: Cross multiply
    1,040,400.90x = 1,560,601.35 × 991,412.10
  4. Step 4: Simplify right side
    1,040,400.90x = 1,547,199,061,666.34
  5. Step 5: Solve for x
    x = 1,547,199,061,666.34/1,040,400.90
  6. Step 6: Final answer
    x = 1,487,118.15

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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.