Home / 1,231,421.40-1,846,959.30-390,058.20

Finding the Fourth Proportional to 1,231,421.40, 1,846,959.30 and 390,058.20

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Solution

The fourth proportional to 1,231,421.40, 1,846,959.30 and 390,058.20 is: 585,032.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,421.40 : 1,846,959.30 = 390,058.20 : x
  2. Step 2: Convert to fraction form
    1,231,421.40/1,846,959.30 = 390,058.20/x
  3. Step 3: Cross multiply
    1,231,421.40x = 1,846,959.30 × 390,058.20
  4. Step 4: Simplify right side
    1,231,421.40x = 720,421,620,031.26
  5. Step 5: Solve for x
    x = 720,421,620,031.26/1,231,421.40
  6. Step 6: Final answer
    x = 585,032.56

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Double scale
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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.