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Finding the Fourth Proportional to 518,076, 714,944.88 and 303,205.68

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Solution

The fourth proportional to 518,076, 714,944.88 and 303,205.68 is: 418,423.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,076 : 714,944.88 = 303,205.68 : x
  2. Step 2: Convert to fraction form
    518,076/714,944.88 = 303,205.68/x
  3. Step 3: Cross multiply
    518,076x = 714,944.88 × 303,205.68
  4. Step 4: Simplify right side
    518,076x = 216,775,348,502.92
  5. Step 5: Solve for x
    x = 216,775,348,502.92/518,076
  6. Step 6: Final answer
    x = 418,423.84

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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.