Home / 485,377,611.20-728,066,416.80-178,606,246.40

Finding the Fourth Proportional to 485,377,611.20, 728,066,416.80 and 178,606,246.40

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Solution

The fourth proportional to 485,377,611.20, 728,066,416.80 and 178,606,246.40 is: 267,909,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,377,611.20 : 728,066,416.80 = 178,606,246.40 : x
  2. Step 2: Convert to fraction form
    485,377,611.20/728,066,416.80 = 178,606,246.40/x
  3. Step 3: Cross multiply
    485,377,611.20x = 728,066,416.80 × 178,606,246.40
  4. Step 4: Simplify right side
    485,377,611.20x = 130,037,209,834,545,888
  5. Step 5: Solve for x
    x = 130,037,209,834,545,888/485,377,611.20
  6. Step 6: Final answer
    x = 267,909,369.60

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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.