Home / 714,278.47-985,423.68-408,190.64

Finding the Fourth Proportional to 714,278.47, 985,423.68 and 408,190.64

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Solution

The fourth proportional to 714,278.47, 985,423.68 and 408,190.64 is: 563,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,278.47 : 985,423.68 = 408,190.64 : x
  2. Step 2: Convert to fraction form
    714,278.47/985,423.68 = 408,190.64/x
  3. Step 3: Cross multiply
    714,278.47x = 985,423.68 × 408,190.64
  4. Step 4: Simplify right side
    714,278.47x = 402,240,722,828.37
  5. Step 5: Solve for x
    x = 402,240,722,828.37/714,278.47
  6. Step 6: Final answer
    x = 563,142.72

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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.