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Finding the Fourth Proportional to 518,987.79, 716,186.91 and 304,270.86

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Solution

The fourth proportional to 518,987.79, 716,186.91 and 304,270.86 is: 419,884.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,987.79 : 716,186.91 = 304,270.86 : x
  2. Step 2: Convert to fraction form
    518,987.79/716,186.91 = 304,270.86/x
  3. Step 3: Cross multiply
    518,987.79x = 716,186.91 × 304,270.86
  4. Step 4: Simplify right side
    518,987.79x = 217,914,807,026.44
  5. Step 5: Solve for x
    x = 217,914,807,026.44/518,987.79
  6. Step 6: Final answer
    x = 419,884.27

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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.