Home / 827,030,793.60-1,240,546,190.40-520,920,777.60

Finding the Fourth Proportional to 827,030,793.60, 1,240,546,190.40 and 520,920,777.60

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Solution

The fourth proportional to 827,030,793.60, 1,240,546,190.40 and 520,920,777.60 is: 781,381,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,030,793.60 : 1,240,546,190.40 = 520,920,777.60 : x
  2. Step 2: Convert to fraction form
    827,030,793.60/1,240,546,190.40 = 520,920,777.60/x
  3. Step 3: Cross multiply
    827,030,793.60x = 1,240,546,190.40 × 520,920,777.60
  4. Step 4: Simplify right side
    827,030,793.60x = 646,226,286,151,885,696
  5. Step 5: Solve for x
    x = 646,226,286,151,885,696/827,030,793.60
  6. Step 6: Final answer
    x = 781,381,166.40

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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.