Home / 858,615.90-1,287,923.85-753,639.90

Finding the Fourth Proportional to 858,615.90, 1,287,923.85 and 753,639.90

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Solution

The fourth proportional to 858,615.90, 1,287,923.85 and 753,639.90 is: 1,130,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,615.90 : 1,287,923.85 = 753,639.90 : x
  2. Step 2: Convert to fraction form
    858,615.90/1,287,923.85 = 753,639.90/x
  3. Step 3: Cross multiply
    858,615.90x = 1,287,923.85 × 753,639.90
  4. Step 4: Simplify right side
    858,615.90x = 970,630,801,521.62
  5. Step 5: Solve for x
    x = 970,630,801,521.62/858,615.90
  6. Step 6: Final answer
    x = 1,130,459.85

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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.