Home / 1,100,064.30-1,650,388.05-390,018.30

Finding the Fourth Proportional to 1,100,064.30, 1,650,388.05 and 390,018.30

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Solution

The fourth proportional to 1,100,064.30, 1,650,388.05 and 390,018.30 is: 585,130.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,064.30 : 1,650,388.05 = 390,018.30 : x
  2. Step 2: Convert to fraction form
    1,100,064.30/1,650,388.05 = 390,018.30/x
  3. Step 3: Cross multiply
    1,100,064.30x = 1,650,388.05 × 390,018.30
  4. Step 4: Simplify right side
    1,100,064.30x = 643,681,541,601.32
  5. Step 5: Solve for x
    x = 643,681,541,601.32/1,100,064.30
  6. Step 6: Final answer
    x = 585,130.83

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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.