Home / 866,051.52-1,299,339.72-392,609.76

Finding the Fourth Proportional to 866,051.52, 1,299,339.72 and 392,609.76

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Solution

The fourth proportional to 866,051.52, 1,299,339.72 and 392,609.76 is: 589,033.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,051.52 : 1,299,339.72 = 392,609.76 : x
  2. Step 2: Convert to fraction form
    866,051.52/1,299,339.72 = 392,609.76/x
  3. Step 3: Cross multiply
    866,051.52x = 1,299,339.72 × 392,609.76
  4. Step 4: Simplify right side
    866,051.52x = 510,133,455,627.67
  5. Step 5: Solve for x
    x = 510,133,455,627.67/866,051.52
  6. Step 6: Final answer
    x = 589,033.61

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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.