Home / 642,207.64-886,246.62-355,746.28

Finding the Fourth Proportional to 642,207.64, 886,246.62 and 355,746.28

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Solution

The fourth proportional to 642,207.64, 886,246.62 and 355,746.28 is: 490,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,207.64 : 886,246.62 = 355,746.28 : x
  2. Step 2: Convert to fraction form
    642,207.64/886,246.62 = 355,746.28/x
  3. Step 3: Cross multiply
    642,207.64x = 886,246.62 × 355,746.28
  4. Step 4: Simplify right side
    642,207.64x = 315,278,938,227.57
  5. Step 5: Solve for x
    x = 315,278,938,227.57/642,207.64
  6. Step 6: Final answer
    x = 490,929.91

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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.