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Finding the Fourth Proportional to 643,547,879.32, 965,330,787.10 and 183,486,048.64

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Solution

The fourth proportional to 643,547,879.32, 965,330,787.10 and 183,486,048.64 is: 275,231,629.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,547,879.32 : 965,330,787.10 = 183,486,048.64 : x
  2. Step 2: Convert to fraction form
    643,547,879.32/965,330,787.10 = 183,486,048.64/x
  3. Step 3: Cross multiply
    643,547,879.32x = 965,330,787.10 × 183,486,048.64
  4. Step 4: Simplify right side
    643,547,879.32x = 177,124,731,755,520,064
  5. Step 5: Solve for x
    x = 177,124,731,755,520,064/643,547,879.32
  6. Step 6: Final answer
    x = 275,231,629.92

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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.