Home / 739,840.30-1,109,760.45-290,411.80

Finding the Fourth Proportional to 739,840.30, 1,109,760.45 and 290,411.80

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Solution

The fourth proportional to 739,840.30, 1,109,760.45 and 290,411.80 is: 435,617.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,840.30 : 1,109,760.45 = 290,411.80 : x
  2. Step 2: Convert to fraction form
    739,840.30/1,109,760.45 = 290,411.80/x
  3. Step 3: Cross multiply
    739,840.30x = 1,109,760.45 × 290,411.80
  4. Step 4: Simplify right side
    739,840.30x = 322,287,529,853.31
  5. Step 5: Solve for x
    x = 322,287,529,853.31/739,840.30
  6. Step 6: Final answer
    x = 435,617.70

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Double scale
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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.