Home / 858,045.90-1,287,068.85-818,679.90

Finding the Fourth Proportional to 858,045.90, 1,287,068.85 and 818,679.90

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Solution

The fourth proportional to 858,045.90, 1,287,068.85 and 818,679.90 is: 1,228,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,045.90 : 1,287,068.85 = 818,679.90 : x
  2. Step 2: Convert to fraction form
    858,045.90/1,287,068.85 = 818,679.90/x
  3. Step 3: Cross multiply
    858,045.90x = 1,287,068.85 × 818,679.90
  4. Step 4: Simplify right side
    858,045.90x = 1,053,697,397,411.12
  5. Step 5: Solve for x
    x = 1,053,697,397,411.12/858,045.90
  6. Step 6: Final answer
    x = 1,228,019.85

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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.