Home / 1,029,142.76-1,420,217-626,734.76

Finding the Fourth Proportional to 1,029,142.76, 1,420,217 and 626,734.76

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Solution

The fourth proportional to 1,029,142.76, 1,420,217 and 626,734.76 is: 864,893.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,142.76 : 1,420,217 = 626,734.76 : x
  2. Step 2: Convert to fraction form
    1,029,142.76/1,420,217 = 626,734.76/x
  3. Step 3: Cross multiply
    1,029,142.76x = 1,420,217 × 626,734.76
  4. Step 4: Simplify right side
    1,029,142.76x = 890,099,360,642.92
  5. Step 5: Solve for x
    x = 890,099,360,642.92/1,029,142.76
  6. Step 6: Final answer
    x = 864,893.96

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Half scale
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Double scale
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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.