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Finding the Fourth Proportional to 1,321,312,390.08, 1,822,964,790.96 and 749,034,048

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Solution

The fourth proportional to 1,321,312,390.08, 1,822,964,790.96 and 749,034,048 is: 1,033,413,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,312,390.08 : 1,822,964,790.96 = 749,034,048 : x
  2. Step 2: Convert to fraction form
    1,321,312,390.08/1,822,964,790.96 = 749,034,048/x
  3. Step 3: Cross multiply
    1,321,312,390.08x = 1,822,964,790.96 × 749,034,048
  4. Step 4: Simplify right side
    1,321,312,390.08x = 1,365,462,696,734,242,560
  5. Step 5: Solve for x
    x = 1,365,462,696,734,242,560/1,321,312,390.08
  6. Step 6: Final answer
    x = 1,033,413,980.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.