Home / 387,946.28-581,918.87-121,727.57

Finding the Fourth Proportional to 387,946.28, 581,918.87 and 121,727.57

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Solution

The fourth proportional to 387,946.28, 581,918.87 and 121,727.57 is: 182,591.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,946.28 : 581,918.87 = 121,727.57 : x
  2. Step 2: Convert to fraction form
    387,946.28/581,918.87 = 121,727.57/x
  3. Step 3: Cross multiply
    387,946.28x = 581,918.87 × 121,727.57
  4. Step 4: Simplify right side
    387,946.28x = 70,835,566,464.01
  5. Step 5: Solve for x
    x = 70,835,566,464.01/387,946.28
  6. Step 6: Final answer
    x = 182,591.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.