Home / 485,280,809.40-727,921,214.10-140,245,692.60

Finding the Fourth Proportional to 485,280,809.40, 727,921,214.10 and 140,245,692.60

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Solution

The fourth proportional to 485,280,809.40, 727,921,214.10 and 140,245,692.60 is: 210,368,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,280,809.40 : 727,921,214.10 = 140,245,692.60 : x
  2. Step 2: Convert to fraction form
    485,280,809.40/727,921,214.10 = 140,245,692.60/x
  3. Step 3: Cross multiply
    485,280,809.40x = 727,921,214.10 × 140,245,692.60
  4. Step 4: Simplify right side
    485,280,809.40x = 102,087,814,829,687,392
  5. Step 5: Solve for x
    x = 102,087,814,829,687,392/485,280,809.40
  6. Step 6: Final answer
    x = 210,368,538.90

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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.