Home / 521,617.84-719,835.60-306,766.96

Finding the Fourth Proportional to 521,617.84, 719,835.60 and 306,766.96

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Solution

The fourth proportional to 521,617.84, 719,835.60 and 306,766.96 is: 423,340.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,617.84 : 719,835.60 = 306,766.96 : x
  2. Step 2: Convert to fraction form
    521,617.84/719,835.60 = 306,766.96/x
  3. Step 3: Cross multiply
    521,617.84x = 719,835.60 × 306,766.96
  4. Step 4: Simplify right side
    521,617.84x = 220,821,778,711.78
  5. Step 5: Solve for x
    x = 220,821,778,711.78/521,617.84
  6. Step 6: Final answer
    x = 423,340.16

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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.