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Finding the Fourth Proportional to 518,028.59, 714,930.63 and 303,155.84

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Solution

The fourth proportional to 518,028.59, 714,930.63 and 303,155.84 is: 418,385.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,028.59 : 714,930.63 = 303,155.84 : x
  2. Step 2: Convert to fraction form
    518,028.59/714,930.63 = 303,155.84/x
  3. Step 3: Cross multiply
    518,028.59x = 714,930.63 × 303,155.84
  4. Step 4: Simplify right side
    518,028.59x = 216,735,395,679.38
  5. Step 5: Solve for x
    x = 216,735,395,679.38/518,028.59
  6. Step 6: Final answer
    x = 418,385.01

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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.