Home / 505,306,838.10-757,960,257.15-431,330,250.90

Finding the Fourth Proportional to 505,306,838.10, 757,960,257.15 and 431,330,250.90

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Solution

The fourth proportional to 505,306,838.10, 757,960,257.15 and 431,330,250.90 is: 646,995,376.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,306,838.10 : 757,960,257.15 = 431,330,250.90 : x
  2. Step 2: Convert to fraction form
    505,306,838.10/757,960,257.15 = 431,330,250.90/x
  3. Step 3: Cross multiply
    505,306,838.10x = 757,960,257.15 × 431,330,250.90
  4. Step 4: Simplify right side
    505,306,838.10x = 326,931,187,888,737,984
  5. Step 5: Solve for x
    x = 326,931,187,888,737,984/505,306,838.10
  6. Step 6: Final answer
    x = 646,995,376.35

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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.