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Finding the Fourth Proportional to 518,270.41, 714,968.80 and 303,278.59

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Solution

The fourth proportional to 518,270.41, 714,968.80 and 303,278.59 is: 418,381.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,270.41 : 714,968.80 = 303,278.59 : x
  2. Step 2: Convert to fraction form
    518,270.41/714,968.80 = 303,278.59/x
  3. Step 3: Cross multiply
    518,270.41x = 714,968.80 × 303,278.59
  4. Step 4: Simplify right side
    518,270.41x = 216,834,729,557.99
  5. Step 5: Solve for x
    x = 216,834,729,557.99/518,270.41
  6. Step 6: Final answer
    x = 418,381.46

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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.