Home / 783,527.97-1,175,624.10-428,126.81

Finding the Fourth Proportional to 783,527.97, 1,175,624.10 and 428,126.81

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Solution

The fourth proportional to 783,527.97, 1,175,624.10 and 428,126.81 is: 642,371.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,527.97 : 1,175,624.10 = 428,126.81 : x
  2. Step 2: Convert to fraction form
    783,527.97/1,175,624.10 = 428,126.81/x
  3. Step 3: Cross multiply
    783,527.97x = 1,175,624.10 × 428,126.81
  4. Step 4: Simplify right side
    783,527.97x = 503,316,189,814.00
  5. Step 5: Solve for x
    x = 503,316,189,814.00/783,527.97
  6. Step 6: Final answer
    x = 642,371.69

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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.