Home / 738,889.32-1,019,181.30-509,456.28

Finding the Fourth Proportional to 738,889.32, 1,019,181.30 and 509,456.28

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Solution

The fourth proportional to 738,889.32, 1,019,181.30 and 509,456.28 is: 702,714.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,889.32 : 1,019,181.30 = 509,456.28 : x
  2. Step 2: Convert to fraction form
    738,889.32/1,019,181.30 = 509,456.28/x
  3. Step 3: Cross multiply
    738,889.32x = 1,019,181.30 × 509,456.28
  4. Step 4: Simplify right side
    738,889.32x = 519,228,313,743.56
  5. Step 5: Solve for x
    x = 519,228,313,743.56/738,889.32
  6. Step 6: Final answer
    x = 702,714.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.