Home / 805,135.20-1,208,480.40-490,207.20

Finding the Fourth Proportional to 805,135.20, 1,208,480.40 and 490,207.20

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Solution

The fourth proportional to 805,135.20, 1,208,480.40 and 490,207.20 is: 735,784.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,135.20 : 1,208,480.40 = 490,207.20 : x
  2. Step 2: Convert to fraction form
    805,135.20/1,208,480.40 = 490,207.20/x
  3. Step 3: Cross multiply
    805,135.20x = 1,208,480.40 × 490,207.20
  4. Step 4: Simplify right side
    805,135.20x = 592,405,793,138.88
  5. Step 5: Solve for x
    x = 592,405,793,138.88/805,135.20
  6. Step 6: Final answer
    x = 735,784.24

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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.