Home / 285,840,750.11-428,727,040.16-78,600,214.58

Finding the Fourth Proportional to 285,840,750.11, 428,727,040.16 and 78,600,214.58

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Solution

The fourth proportional to 285,840,750.11, 428,727,040.16 and 78,600,214.58 is: 117,890,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,840,750.11 : 428,727,040.16 = 78,600,214.58 : x
  2. Step 2: Convert to fraction form
    285,840,750.11/428,727,040.16 = 78,600,214.58/x
  3. Step 3: Cross multiply
    285,840,750.11x = 428,727,040.16 × 78,600,214.58
  4. Step 4: Simplify right side
    285,840,750.11x = 33,698,037,350,287,640
  5. Step 5: Solve for x
    x = 33,698,037,350,287,640/285,840,750.11
  6. Step 6: Final answer
    x = 117,890,949.20

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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.