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Finding the Fourth Proportional to 518,986.79, 716,185.53 and 304,269.86

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Solution

The fourth proportional to 518,986.79, 716,185.53 and 304,269.86 is: 419,882.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,986.79 : 716,185.53 = 304,269.86 : x
  2. Step 2: Convert to fraction form
    518,986.79/716,185.53 = 304,269.86/x
  3. Step 3: Cross multiply
    518,986.79x = 716,185.53 × 304,269.86
  4. Step 4: Simplify right side
    518,986.79x = 217,913,672,737.59
  5. Step 5: Solve for x
    x = 217,913,672,737.59/518,986.79
  6. Step 6: Final answer
    x = 419,882.89

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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.