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Finding the Fourth Proportional to 680,647.59, 939,276.51 and 374,720.92

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Solution

The fourth proportional to 680,647.59, 939,276.51 and 374,720.92 is: 517,105.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,647.59 : 939,276.51 = 374,720.92 : x
  2. Step 2: Convert to fraction form
    680,647.59/939,276.51 = 374,720.92/x
  3. Step 3: Cross multiply
    680,647.59x = 939,276.51 × 374,720.92
  4. Step 4: Simplify right side
    680,647.59x = 351,966,554,208.19
  5. Step 5: Solve for x
    x = 351,966,554,208.19/680,647.59
  6. Step 6: Final answer
    x = 517,105.41

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1.5x scale

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.