Home / 676,871.60-1,015,307.40-638,164.40

Finding the Fourth Proportional to 676,871.60, 1,015,307.40 and 638,164.40

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Solution

The fourth proportional to 676,871.60, 1,015,307.40 and 638,164.40 is: 957,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,871.60 : 1,015,307.40 = 638,164.40 : x
  2. Step 2: Convert to fraction form
    676,871.60/1,015,307.40 = 638,164.40/x
  3. Step 3: Cross multiply
    676,871.60x = 1,015,307.40 × 638,164.40
  4. Step 4: Simplify right side
    676,871.60x = 647,933,037,736.56
  5. Step 5: Solve for x
    x = 647,933,037,736.56/676,871.60
  6. Step 6: Final answer
    x = 957,246.60

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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.