Home / 676,741.43-933,841.07-390,206.16

Finding the Fourth Proportional to 676,741.43, 933,841.07 and 390,206.16

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Solution

The fourth proportional to 676,741.43, 933,841.07 and 390,206.16 is: 538,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,741.43 : 933,841.07 = 390,206.16 : x
  2. Step 2: Convert to fraction form
    676,741.43/933,841.07 = 390,206.16/x
  3. Step 3: Cross multiply
    676,741.43x = 933,841.07 × 390,206.16
  4. Step 4: Simplify right side
    676,741.43x = 364,390,536,023.96
  5. Step 5: Solve for x
    x = 364,390,536,023.96/676,741.43
  6. Step 6: Final answer
    x = 538,448.69

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Double scale
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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.