Home / 485,921,656.80-728,946,421.20-179,429,061.60

Finding the Fourth Proportional to 485,921,656.80, 728,946,421.20 and 179,429,061.60

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Solution

The fourth proportional to 485,921,656.80, 728,946,421.20 and 179,429,061.60 is: 269,167,201.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,921,656.80 : 728,946,421.20 = 179,429,061.60 : x
  2. Step 2: Convert to fraction form
    485,921,656.80/728,946,421.20 = 179,429,061.60/x
  3. Step 3: Cross multiply
    485,921,656.80x = 728,946,421.20 × 179,429,061.60
  4. Step 4: Simplify right side
    485,921,656.80x = 130,794,172,312,594,352
  5. Step 5: Solve for x
    x = 130,794,172,312,594,352/485,921,656.80
  6. Step 6: Final answer
    x = 269,167,201.10

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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.