Home / 805,645.80-1,208,468.70-490,717.80

Finding the Fourth Proportional to 805,645.80, 1,208,468.70 and 490,717.80

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Solution

The fourth proportional to 805,645.80, 1,208,468.70 and 490,717.80 is: 736,076.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,645.80 : 1,208,468.70 = 490,717.80 : x
  2. Step 2: Convert to fraction form
    805,645.80/1,208,468.70 = 490,717.80/x
  3. Step 3: Cross multiply
    805,645.80x = 1,208,468.70 × 490,717.80
  4. Step 4: Simplify right side
    805,645.80x = 593,017,101,832.86
  5. Step 5: Solve for x
    x = 593,017,101,832.86/805,645.80
  6. Step 6: Final answer
    x = 736,076.70

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Double scale
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Similar ratio
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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.