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Finding the Fourth Proportional to 676,860.90, 933,949.62 and 386,339.82

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Solution

The fourth proportional to 676,860.90, 933,949.62 and 386,339.82 is: 533,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,860.90 : 933,949.62 = 386,339.82 : x
  2. Step 2: Convert to fraction form
    676,860.90/933,949.62 = 386,339.82/x
  3. Step 3: Cross multiply
    676,860.90x = 933,949.62 × 386,339.82
  4. Step 4: Simplify right side
    676,860.90x = 360,821,928,079.87
  5. Step 5: Solve for x
    x = 360,821,928,079.87/676,860.90
  6. Step 6: Final answer
    x = 533,081.36

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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.