Home / 739,963.45-1,109,495.70-290,145.40

Finding the Fourth Proportional to 739,963.45, 1,109,495.70 and 290,145.40

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Solution

The fourth proportional to 739,963.45, 1,109,495.70 and 290,145.40 is: 435,041.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,963.45 : 1,109,495.70 = 290,145.40 : x
  2. Step 2: Convert to fraction form
    739,963.45/1,109,495.70 = 290,145.40/x
  3. Step 3: Cross multiply
    739,963.45x = 1,109,495.70 × 290,145.40
  4. Step 4: Simplify right side
    739,963.45x = 321,915,073,674.78
  5. Step 5: Solve for x
    x = 321,915,073,674.78/739,963.45
  6. Step 6: Final answer
    x = 435,041.86

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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.