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Finding the Fourth Proportional to 680,989.71, 939,754.20 and 375,094.74

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Solution

The fourth proportional to 680,989.71, 939,754.20 and 375,094.74 is: 517,624.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,989.71 : 939,754.20 = 375,094.74 : x
  2. Step 2: Convert to fraction form
    680,989.71/939,754.20 = 375,094.74/x
  3. Step 3: Cross multiply
    680,989.71x = 939,754.20 × 375,094.74
  4. Step 4: Simplify right side
    680,989.71x = 352,496,857,312.91
  5. Step 5: Solve for x
    x = 352,496,857,312.91/680,989.71
  6. Step 6: Final answer
    x = 517,624.35

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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.