Home / 1,382,415.31-2,073,621.34-385,143.31

Finding the Fourth Proportional to 1,382,415.31, 2,073,621.34 and 385,143.31

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Solution

The fourth proportional to 1,382,415.31, 2,073,621.34 and 385,143.31 is: 577,714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,415.31 : 2,073,621.34 = 385,143.31 : x
  2. Step 2: Convert to fraction form
    1,382,415.31/2,073,621.34 = 385,143.31/x
  3. Step 3: Cross multiply
    1,382,415.31x = 2,073,621.34 × 385,143.31
  4. Step 4: Simplify right side
    1,382,415.31x = 798,641,386,574.24
  5. Step 5: Solve for x
    x = 798,641,386,574.24/1,382,415.31
  6. Step 6: Final answer
    x = 577,714.51

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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.