Home / 513,541,125.32-708,626,965.64-287,492,487.05

Finding the Fourth Proportional to 513,541,125.32, 708,626,965.64 and 287,492,487.05

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Solution

The fourth proportional to 513,541,125.32, 708,626,965.64 and 287,492,487.05 is: 396,706,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,541,125.32 : 708,626,965.64 = 287,492,487.05 : x
  2. Step 2: Convert to fraction form
    513,541,125.32/708,626,965.64 = 287,492,487.05/x
  3. Step 3: Cross multiply
    513,541,125.32x = 708,626,965.64 × 287,492,487.05
  4. Step 4: Simplify right side
    513,541,125.32x = 203,724,928,737,557,920
  5. Step 5: Solve for x
    x = 203,724,928,737,557,920/513,541,125.32
  6. Step 6: Final answer
    x = 396,706,161.78

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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.