Home / 778,348.84-1,167,860.42-418,099.34

Finding the Fourth Proportional to 778,348.84, 1,167,860.42 and 418,099.34

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Solution

The fourth proportional to 778,348.84, 1,167,860.42 and 418,099.34 is: 627,330.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,348.84 : 1,167,860.42 = 418,099.34 : x
  2. Step 2: Convert to fraction form
    778,348.84/1,167,860.42 = 418,099.34/x
  3. Step 3: Cross multiply
    778,348.84x = 1,167,860.42 × 418,099.34
  4. Step 4: Simplify right side
    778,348.84x = 488,281,666,145.15
  5. Step 5: Solve for x
    x = 488,281,666,145.15/778,348.84
  6. Step 6: Final answer
    x = 627,330.11

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1.5x scale

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.