Home / 820,401.30-1,230,601.95-709,809.30

Finding the Fourth Proportional to 820,401.30, 1,230,601.95 and 709,809.30

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Solution

The fourth proportional to 820,401.30, 1,230,601.95 and 709,809.30 is: 1,064,713.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,401.30 : 1,230,601.95 = 709,809.30 : x
  2. Step 2: Convert to fraction form
    820,401.30/1,230,601.95 = 709,809.30/x
  3. Step 3: Cross multiply
    820,401.30x = 1,230,601.95 × 709,809.30
  4. Step 4: Simplify right side
    820,401.30x = 873,492,708,708.14
  5. Step 5: Solve for x
    x = 873,492,708,708.14/820,401.30
  6. Step 6: Final answer
    x = 1,064,713.95

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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.