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Finding the Fourth Proportional to 680,658.56, 939,273.14 and 374,675.18

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Solution

The fourth proportional to 680,658.56, 939,273.14 and 374,675.18 is: 517,032.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,658.56 : 939,273.14 = 374,675.18 : x
  2. Step 2: Convert to fraction form
    680,658.56/939,273.14 = 374,675.18/x
  3. Step 3: Cross multiply
    680,658.56x = 939,273.14 × 374,675.18
  4. Step 4: Simplify right side
    680,658.56x = 351,922,329,038.99
  5. Step 5: Solve for x
    x = 351,922,329,038.99/680,658.56
  6. Step 6: Final answer
    x = 517,032.11

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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.