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Finding the Fourth Proportional to 680,810.40, 939,543.84 and 374,900.04

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Solution

The fourth proportional to 680,810.40, 939,543.84 and 374,900.04 is: 517,376.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,810.40 : 939,543.84 = 374,900.04 : x
  2. Step 2: Convert to fraction form
    680,810.40/939,543.84 = 374,900.04/x
  3. Step 3: Cross multiply
    680,810.40x = 939,543.84 × 374,900.04
  4. Step 4: Simplify right side
    680,810.40x = 352,235,023,197.75
  5. Step 5: Solve for x
    x = 352,235,023,197.75/680,810.40
  6. Step 6: Final answer
    x = 517,376.09

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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.