Home / 426,348,006.20-639,522,009.30-400,519,973.60

Finding the Fourth Proportional to 426,348,006.20, 639,522,009.30 and 400,519,973.60

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Solution

The fourth proportional to 426,348,006.20, 639,522,009.30 and 400,519,973.60 is: 600,779,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,348,006.20 : 639,522,009.30 = 400,519,973.60 : x
  2. Step 2: Convert to fraction form
    426,348,006.20/639,522,009.30 = 400,519,973.60/x
  3. Step 3: Cross multiply
    426,348,006.20x = 639,522,009.30 × 400,519,973.60
  4. Step 4: Simplify right side
    426,348,006.20x = 256,141,338,281,454,944
  5. Step 5: Solve for x
    x = 256,141,338,281,454,944/426,348,006.20
  6. Step 6: Final answer
    x = 600,779,960.40

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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.