Home / 709,479.52-979,051.15-403,512.76

Finding the Fourth Proportional to 709,479.52, 979,051.15 and 403,512.76

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Solution

The fourth proportional to 709,479.52, 979,051.15 and 403,512.76 is: 556,830.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,479.52 : 979,051.15 = 403,512.76 : x
  2. Step 2: Convert to fraction form
    709,479.52/979,051.15 = 403,512.76/x
  3. Step 3: Cross multiply
    709,479.52x = 979,051.15 × 403,512.76
  4. Step 4: Simplify right side
    709,479.52x = 395,059,627,938.72
  5. Step 5: Solve for x
    x = 395,059,627,938.72/709,479.52
  6. Step 6: Final answer
    x = 556,830.20

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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.