Home / 778,613.88-1,074,465.90-439,113.72

Finding the Fourth Proportional to 778,613.88, 1,074,465.90 and 439,113.72

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Solution

The fourth proportional to 778,613.88, 1,074,465.90 and 439,113.72 is: 605,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,613.88 : 1,074,465.90 = 439,113.72 : x
  2. Step 2: Convert to fraction form
    778,613.88/1,074,465.90 = 439,113.72/x
  3. Step 3: Cross multiply
    778,613.88x = 1,074,465.90 × 439,113.72
  4. Step 4: Simplify right side
    778,613.88x = 471,812,718,362.15
  5. Step 5: Solve for x
    x = 471,812,718,362.15/778,613.88
  6. Step 6: Final answer
    x = 605,964.95

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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.