Home / 759,140.40-1,137,981.60-438,963.60

Finding the Fourth Proportional to 759,140.40, 1,137,981.60 and 438,963.60

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Solution

The fourth proportional to 759,140.40, 1,137,981.60 and 438,963.60 is: 658,023.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,140.40 : 1,137,981.60 = 438,963.60 : x
  2. Step 2: Convert to fraction form
    759,140.40/1,137,981.60 = 438,963.60/x
  3. Step 3: Cross multiply
    759,140.40x = 1,137,981.60 × 438,963.60
  4. Step 4: Simplify right side
    759,140.40x = 499,532,499,869.76
  5. Step 5: Solve for x
    x = 499,532,499,869.76/759,140.40
  6. Step 6: Final answer
    x = 658,023.86

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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.