Home / 739,848.80-1,109,773.20-290,420.30

Finding the Fourth Proportional to 739,848.80, 1,109,773.20 and 290,420.30

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Solution

The fourth proportional to 739,848.80, 1,109,773.20 and 290,420.30 is: 435,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,848.80 : 1,109,773.20 = 290,420.30 : x
  2. Step 2: Convert to fraction form
    739,848.80/1,109,773.20 = 290,420.30/x
  3. Step 3: Cross multiply
    739,848.80x = 1,109,773.20 × 290,420.30
  4. Step 4: Simplify right side
    739,848.80x = 322,300,665,675.96
  5. Step 5: Solve for x
    x = 322,300,665,675.96/739,848.80
  6. Step 6: Final answer
    x = 435,630.45

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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.