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Finding the Fourth Proportional to 605,044.20, 907,566.30 and 290,116.20

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Solution

The fourth proportional to 605,044.20, 907,566.30 and 290,116.20 is: 435,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,044.20 : 907,566.30 = 290,116.20 : x
  2. Step 2: Convert to fraction form
    605,044.20/907,566.30 = 290,116.20/x
  3. Step 3: Cross multiply
    605,044.20x = 907,566.30 × 290,116.20
  4. Step 4: Simplify right side
    605,044.20x = 263,299,686,204.06
  5. Step 5: Solve for x
    x = 263,299,686,204.06/605,044.20
  6. Step 6: Final answer
    x = 435,174.30

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Half scale
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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.