Home / 915,400.71-1,263,292.92-507,476.61

Finding the Fourth Proportional to 915,400.71, 1,263,292.92 and 507,476.61

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Solution

The fourth proportional to 915,400.71, 1,263,292.92 and 507,476.61 is: 700,339.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,400.71 : 1,263,292.92 = 507,476.61 : x
  2. Step 2: Convert to fraction form
    915,400.71/1,263,292.92 = 507,476.61/x
  3. Step 3: Cross multiply
    915,400.71x = 1,263,292.92 × 507,476.61
  4. Step 4: Simplify right side
    915,400.71x = 641,091,608,478.60
  5. Step 5: Solve for x
    x = 641,091,608,478.60/915,400.71
  6. Step 6: Final answer
    x = 700,339.86

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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.