Home / 1,457,872.90-2,186,809.35-820,143.70

Finding the Fourth Proportional to 1,457,872.90, 2,186,809.35 and 820,143.70

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Solution

The fourth proportional to 1,457,872.90, 2,186,809.35 and 820,143.70 is: 1,230,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457,872.90 : 2,186,809.35 = 820,143.70 : x
  2. Step 2: Convert to fraction form
    1,457,872.90/2,186,809.35 = 820,143.70/x
  3. Step 3: Cross multiply
    1,457,872.90x = 2,186,809.35 × 820,143.70
  4. Step 4: Simplify right side
    1,457,872.90x = 1,793,497,911,503.60
  5. Step 5: Solve for x
    x = 1,793,497,911,503.60/1,457,872.90
  6. Step 6: Final answer
    x = 1,230,215.55

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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.