Home / 877,947.20-1,211,549.76-490,760.64

Finding the Fourth Proportional to 877,947.20, 1,211,549.76 and 490,760.64

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Solution

The fourth proportional to 877,947.20, 1,211,549.76 and 490,760.64 is: 677,239.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,947.20 : 1,211,549.76 = 490,760.64 : x
  2. Step 2: Convert to fraction form
    877,947.20/1,211,549.76 = 490,760.64/x
  3. Step 3: Cross multiply
    877,947.20x = 1,211,549.76 × 490,760.64
  4. Step 4: Simplify right side
    877,947.20x = 594,580,935,609.45
  5. Step 5: Solve for x
    x = 594,580,935,609.45/877,947.20
  6. Step 6: Final answer
    x = 677,239.97

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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.