Home / 861,946.30-1,189,485.84-499,580.35

Finding the Fourth Proportional to 861,946.30, 1,189,485.84 and 499,580.35

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Solution

The fourth proportional to 861,946.30, 1,189,485.84 and 499,580.35 is: 689,420.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,946.30 : 1,189,485.84 = 499,580.35 : x
  2. Step 2: Convert to fraction form
    861,946.30/1,189,485.84 = 499,580.35/x
  3. Step 3: Cross multiply
    861,946.30x = 1,189,485.84 × 499,580.35
  4. Step 4: Simplify right side
    861,946.30x = 594,243,752,267.24
  5. Step 5: Solve for x
    x = 594,243,752,267.24/861,946.30
  6. Step 6: Final answer
    x = 689,420.85

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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.