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Finding the Fourth Proportional to 680,661.36, 939,277.02 and 374,677.98

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Solution

The fourth proportional to 680,661.36, 939,277.02 and 374,677.98 is: 517,035.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,661.36 : 939,277.02 = 374,677.98 : x
  2. Step 2: Convert to fraction form
    680,661.36/939,277.02 = 374,677.98/x
  3. Step 3: Cross multiply
    680,661.36x = 939,277.02 × 374,677.98
  4. Step 4: Simplify right side
    680,661.36x = 351,926,416,514.02
  5. Step 5: Solve for x
    x = 351,926,416,514.02/680,661.36
  6. Step 6: Final answer
    x = 517,035.98

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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.