Home / 676,741.94-933,841.76-390,206.66

Finding the Fourth Proportional to 676,741.94, 933,841.76 and 390,206.66

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Solution

The fourth proportional to 676,741.94, 933,841.76 and 390,206.66 is: 538,449.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,741.94 : 933,841.76 = 390,206.66 : x
  2. Step 2: Convert to fraction form
    676,741.94/933,841.76 = 390,206.66/x
  3. Step 3: Cross multiply
    676,741.94x = 933,841.76 × 390,206.66
  4. Step 4: Simplify right side
    676,741.94x = 364,391,274,138.12
  5. Step 5: Solve for x
    x = 364,391,274,138.12/676,741.94
  6. Step 6: Final answer
    x = 538,449.37

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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.