Home / 778,577.68-1,074,434.28-420,881.68

Finding the Fourth Proportional to 778,577.68, 1,074,434.28 and 420,881.68

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Solution

The fourth proportional to 778,577.68, 1,074,434.28 and 420,881.68 is: 580,815.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,577.68 : 1,074,434.28 = 420,881.68 : x
  2. Step 2: Convert to fraction form
    778,577.68/1,074,434.28 = 420,881.68/x
  3. Step 3: Cross multiply
    778,577.68x = 1,074,434.28 × 420,881.68
  4. Step 4: Simplify right side
    778,577.68x = 452,209,704,815.99
  5. Step 5: Solve for x
    x = 452,209,704,815.99/778,577.68
  6. Step 6: Final answer
    x = 580,815.14

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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.