Home / 866,055.52-1,299,345.72-392,613.76

Finding the Fourth Proportional to 866,055.52, 1,299,345.72 and 392,613.76

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Solution

The fourth proportional to 866,055.52, 1,299,345.72 and 392,613.76 is: 589,039.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,055.52 : 1,299,345.72 = 392,613.76 : x
  2. Step 2: Convert to fraction form
    866,055.52/1,299,345.72 = 392,613.76/x
  3. Step 3: Cross multiply
    866,055.52x = 1,299,345.72 × 392,613.76
  4. Step 4: Simplify right side
    866,055.52x = 510,141,008,669.11
  5. Step 5: Solve for x
    x = 510,141,008,669.11/866,055.52
  6. Step 6: Final answer
    x = 589,039.61

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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.