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Finding the Fourth Proportional to 716,389.84, 987,939.46 and 458,348.45

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Solution

The fourth proportional to 716,389.84, 987,939.46 and 458,348.45 is: 632,086.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,389.84 : 987,939.46 = 458,348.45 : x
  2. Step 2: Convert to fraction form
    716,389.84/987,939.46 = 458,348.45/x
  3. Step 3: Cross multiply
    716,389.84x = 987,939.46 × 458,348.45
  4. Step 4: Simplify right side
    716,389.84x = 452,820,520,184.84
  5. Step 5: Solve for x
    x = 452,820,520,184.84/716,389.84
  6. Step 6: Final answer
    x = 632,086.74

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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.