Home / 689,914.20-1,034,871.30-291,005.40

Finding the Fourth Proportional to 689,914.20, 1,034,871.30 and 291,005.40

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Solution

The fourth proportional to 689,914.20, 1,034,871.30 and 291,005.40 is: 436,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,914.20 : 1,034,871.30 = 291,005.40 : x
  2. Step 2: Convert to fraction form
    689,914.20/1,034,871.30 = 291,005.40/x
  3. Step 3: Cross multiply
    689,914.20x = 1,034,871.30 × 291,005.40
  4. Step 4: Simplify right side
    689,914.20x = 301,153,136,605.02
  5. Step 5: Solve for x
    x = 301,153,136,605.02/689,914.20
  6. Step 6: Final answer
    x = 436,508.10

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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.