Home / 828,422.82-1,240,641.21-472,357.38

Finding the Fourth Proportional to 828,422.82, 1,240,641.21 and 472,357.38

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Solution

The fourth proportional to 828,422.82, 1,240,641.21 and 472,357.38 is: 707,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,422.82 : 1,240,641.21 = 472,357.38 : x
  2. Step 2: Convert to fraction form
    828,422.82/1,240,641.21 = 472,357.38/x
  3. Step 3: Cross multiply
    828,422.82x = 1,240,641.21 × 472,357.38
  4. Step 4: Simplify right side
    828,422.82x = 586,026,031,475.63
  5. Step 5: Solve for x
    x = 586,026,031,475.63/828,422.82
  6. Step 6: Final answer
    x = 707,399.67

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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.