Home / 853,041,886.65-1,280,156,824.38-300,388,829.72

Finding the Fourth Proportional to 853,041,886.65, 1,280,156,824.38 and 300,388,829.72

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Solution

The fourth proportional to 853,041,886.65, 1,280,156,824.38 and 300,388,829.72 is: 450,792,412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,041,886.65 : 1,280,156,824.38 = 300,388,829.72 : x
  2. Step 2: Convert to fraction form
    853,041,886.65/1,280,156,824.38 = 300,388,829.72/x
  3. Step 3: Cross multiply
    853,041,886.65x = 1,280,156,824.38 × 300,388,829.72
  4. Step 4: Simplify right side
    853,041,886.65x = 384,544,810,327,179,008
  5. Step 5: Solve for x
    x = 384,544,810,327,179,008/853,041,886.65
  6. Step 6: Final answer
    x = 450,792,412.83

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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.