Home / 390,205,103.10-585,250,680.54-113,782,037.46

Finding the Fourth Proportional to 390,205,103.10, 585,250,680.54 and 113,782,037.46

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Solution

The fourth proportional to 390,205,103.10, 585,250,680.54 and 113,782,037.46 is: 170,656,442.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,205,103.10 : 585,250,680.54 = 113,782,037.46 : x
  2. Step 2: Convert to fraction form
    390,205,103.10/585,250,680.54 = 113,782,037.46/x
  3. Step 3: Cross multiply
    390,205,103.10x = 585,250,680.54 × 113,782,037.46
  4. Step 4: Simplify right side
    390,205,103.10x = 66,591,014,856,692,768
  5. Step 5: Solve for x
    x = 66,591,014,856,692,768/390,205,103.10
  6. Step 6: Final answer
    x = 170,656,442.80

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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.