Home / 1,161,701.09-1,603,127.30-645,459.74

Finding the Fourth Proportional to 1,161,701.09, 1,603,127.30 and 645,459.74

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Solution

The fourth proportional to 1,161,701.09, 1,603,127.30 and 645,459.74 is: 890,723.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161,701.09 : 1,603,127.30 = 645,459.74 : x
  2. Step 2: Convert to fraction form
    1,161,701.09/1,603,127.30 = 645,459.74/x
  3. Step 3: Cross multiply
    1,161,701.09x = 1,603,127.30 × 645,459.74
  4. Step 4: Simplify right side
    1,161,701.09x = 1,034,754,125,013.69
  5. Step 5: Solve for x
    x = 1,034,754,125,013.69/1,161,701.09
  6. Step 6: Final answer
    x = 890,723.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.