Home / 917,359.90-1,376,039.85-858,310.90

Finding the Fourth Proportional to 917,359.90, 1,376,039.85 and 858,310.90

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Solution

The fourth proportional to 917,359.90, 1,376,039.85 and 858,310.90 is: 1,287,466.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,359.90 : 1,376,039.85 = 858,310.90 : x
  2. Step 2: Convert to fraction form
    917,359.90/1,376,039.85 = 858,310.90/x
  3. Step 3: Cross multiply
    917,359.90x = 1,376,039.85 × 858,310.90
  4. Step 4: Simplify right side
    917,359.90x = 1,181,070,002,089.37
  5. Step 5: Solve for x
    x = 1,181,070,002,089.37/917,359.90
  6. Step 6: Final answer
    x = 1,287,466.35

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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.