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Finding the Fourth Proportional to 674,716.60, 930,955.44 and 402,872.50

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Solution

The fourth proportional to 674,716.60, 930,955.44 and 402,872.50 is: 555,872.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,716.60 : 930,955.44 = 402,872.50 : x
  2. Step 2: Convert to fraction form
    674,716.60/930,955.44 = 402,872.50/x
  3. Step 3: Cross multiply
    674,716.60x = 930,955.44 × 402,872.50
  4. Step 4: Simplify right side
    674,716.60x = 375,056,345,501.40
  5. Step 5: Solve for x
    x = 375,056,345,501.40/674,716.60
  6. Step 6: Final answer
    x = 555,872.41

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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.