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Finding the Fourth Proportional to 710,170,115.85, 979,992,471.83 and 392,611,335.26

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Solution

The fourth proportional to 710,170,115.85, 979,992,471.83 and 392,611,335.26 is: 541,780,264.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,170,115.85 : 979,992,471.83 = 392,611,335.26 : x
  2. Step 2: Convert to fraction form
    710,170,115.85/979,992,471.83 = 392,611,335.26/x
  3. Step 3: Cross multiply
    710,170,115.85x = 979,992,471.83 × 392,611,335.26
  4. Step 4: Simplify right side
    710,170,115.85x = 384,756,152,903,061,248
  5. Step 5: Solve for x
    x = 384,756,152,903,061,248/710,170,115.85
  6. Step 6: Final answer
    x = 541,780,264.07

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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.