Home / 917,309.60-1,375,964.40-492,156.80

Finding the Fourth Proportional to 917,309.60, 1,375,964.40 and 492,156.80

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Solution

The fourth proportional to 917,309.60, 1,375,964.40 and 492,156.80 is: 738,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,309.60 : 1,375,964.40 = 492,156.80 : x
  2. Step 2: Convert to fraction form
    917,309.60/1,375,964.40 = 492,156.80/x
  3. Step 3: Cross multiply
    917,309.60x = 1,375,964.40 × 492,156.80
  4. Step 4: Simplify right side
    917,309.60x = 677,190,236,017.92
  5. Step 5: Solve for x
    x = 677,190,236,017.92/917,309.60
  6. Step 6: Final answer
    x = 738,235.20

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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.