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Finding the Fourth Proportional to 802,914.98, 1,107,967.50 and 440,330.90

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Solution

The fourth proportional to 802,914.98, 1,107,967.50 and 440,330.90 is: 607,626.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,914.98 : 1,107,967.50 = 440,330.90 : x
  2. Step 2: Convert to fraction form
    802,914.98/1,107,967.50 = 440,330.90/x
  3. Step 3: Cross multiply
    802,914.98x = 1,107,967.50 × 440,330.90
  4. Step 4: Simplify right side
    802,914.98x = 487,872,320,905.91
  5. Step 5: Solve for x
    x = 487,872,320,905.91/802,914.98
  6. Step 6: Final answer
    x = 607,626.38

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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.