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Finding the Fourth Proportional to 487,300.84, 729,179.10 and 402,270.28

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Solution

The fourth proportional to 487,300.84, 729,179.10 and 402,270.28 is: 601,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,300.84 : 729,179.10 = 402,270.28 : x
  2. Step 2: Convert to fraction form
    487,300.84/729,179.10 = 402,270.28/x
  3. Step 3: Cross multiply
    487,300.84x = 729,179.10 × 402,270.28
  4. Step 4: Simplify right side
    487,300.84x = 293,327,080,727.15
  5. Step 5: Solve for x
    x = 293,327,080,727.15/487,300.84
  6. Step 6: Final answer
    x = 601,942.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.