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Finding the Fourth Proportional to 709,763.54, 979,460.64 and 403,833.20

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Solution

The fourth proportional to 709,763.54, 979,460.64 and 403,833.20 is: 557,282.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,763.54 : 979,460.64 = 403,833.20 : x
  2. Step 2: Convert to fraction form
    709,763.54/979,460.64 = 403,833.20/x
  3. Step 3: Cross multiply
    709,763.54x = 979,460.64 × 403,833.20
  4. Step 4: Simplify right side
    709,763.54x = 395,538,719,627.95
  5. Step 5: Solve for x
    x = 395,538,719,627.95/709,763.54
  6. Step 6: Final answer
    x = 557,282.39

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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.