Home / 687,745,803.60-1,031,618,705.40-442,857,790.80

Finding the Fourth Proportional to 687,745,803.60, 1,031,618,705.40 and 442,857,790.80

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Solution

The fourth proportional to 687,745,803.60, 1,031,618,705.40 and 442,857,790.80 is: 664,286,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,745,803.60 : 1,031,618,705.40 = 442,857,790.80 : x
  2. Step 2: Convert to fraction form
    687,745,803.60/1,031,618,705.40 = 442,857,790.80/x
  3. Step 3: Cross multiply
    687,745,803.60x = 1,031,618,705.40 × 442,857,790.80
  4. Step 4: Simplify right side
    687,745,803.60x = 456,860,380,821,400,064
  5. Step 5: Solve for x
    x = 456,860,380,821,400,064/687,745,803.60
  6. Step 6: Final answer
    x = 664,286,686.20

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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.