Home / 426,395,220.60-639,592,830.90-386,856,010.20

Finding the Fourth Proportional to 426,395,220.60, 639,592,830.90 and 386,856,010.20

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Solution

The fourth proportional to 426,395,220.60, 639,592,830.90 and 386,856,010.20 is: 580,284,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,395,220.60 : 639,592,830.90 = 386,856,010.20 : x
  2. Step 2: Convert to fraction form
    426,395,220.60/639,592,830.90 = 386,856,010.20/x
  3. Step 3: Cross multiply
    426,395,220.60x = 639,592,830.90 × 386,856,010.20
  4. Step 4: Simplify right side
    426,395,220.60x = 247,430,330,714,497,248
  5. Step 5: Solve for x
    x = 247,430,330,714,497,248/426,395,220.60
  6. Step 6: Final answer
    x = 580,284,015.30

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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.