Home / 714,576.94-986,117.09-387,889.72

Finding the Fourth Proportional to 714,576.94, 986,117.09 and 387,889.72

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Solution

The fourth proportional to 714,576.94, 986,117.09 and 387,889.72 is: 535,288.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,576.94 : 986,117.09 = 387,889.72 : x
  2. Step 2: Convert to fraction form
    714,576.94/986,117.09 = 387,889.72/x
  3. Step 3: Cross multiply
    714,576.94x = 986,117.09 × 387,889.72
  4. Step 4: Simplify right side
    714,576.94x = 382,504,677,522.57
  5. Step 5: Solve for x
    x = 382,504,677,522.57/714,576.94
  6. Step 6: Final answer
    x = 535,288.30

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Double scale
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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.