Home / 1,231,386.40-1,846,906.80-390,023.20

Finding the Fourth Proportional to 1,231,386.40, 1,846,906.80 and 390,023.20

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Solution

The fourth proportional to 1,231,386.40, 1,846,906.80 and 390,023.20 is: 584,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,386.40 : 1,846,906.80 = 390,023.20 : x
  2. Step 2: Convert to fraction form
    1,231,386.40/1,846,906.80 = 390,023.20/x
  3. Step 3: Cross multiply
    1,231,386.40x = 1,846,906.80 × 390,023.20
  4. Step 4: Simplify right side
    1,231,386.40x = 720,336,500,237.76
  5. Step 5: Solve for x
    x = 720,336,500,237.76/1,231,386.40
  6. Step 6: Final answer
    x = 584,980.07

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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.