Home / 485,567,344.80-728,351,017.20-429,447,175.20

Finding the Fourth Proportional to 485,567,344.80, 728,351,017.20 and 429,447,175.20

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Solution

The fourth proportional to 485,567,344.80, 728,351,017.20 and 429,447,175.20 is: 644,170,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,567,344.80 : 728,351,017.20 = 429,447,175.20 : x
  2. Step 2: Convert to fraction form
    485,567,344.80/728,351,017.20 = 429,447,175.20/x
  3. Step 3: Cross multiply
    485,567,344.80x = 728,351,017.20 × 429,447,175.20
  4. Step 4: Simplify right side
    485,567,344.80x = 312,788,286,890,586,624
  5. Step 5: Solve for x
    x = 312,788,286,890,586,624/485,567,344.80
  6. Step 6: Final answer
    x = 644,170,762.80

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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.