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Finding the Fourth Proportional to 686,373.72, 947,194.08 and 376,275.74

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Solution

The fourth proportional to 686,373.72, 947,194.08 and 376,275.74 is: 519,259.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,373.72 : 947,194.08 = 376,275.74 : x
  2. Step 2: Convert to fraction form
    686,373.72/947,194.08 = 376,275.74/x
  3. Step 3: Cross multiply
    686,373.72x = 947,194.08 × 376,275.74
  4. Step 4: Simplify right side
    686,373.72x = 356,406,153,375.62
  5. Step 5: Solve for x
    x = 356,406,153,375.62/686,373.72
  6. Step 6: Final answer
    x = 519,259.61

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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.