Home / 714,943.41-986,617.80-388,253.22

Finding the Fourth Proportional to 714,943.41, 986,617.80 and 388,253.22

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Solution

The fourth proportional to 714,943.41, 986,617.80 and 388,253.22 is: 535,787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,943.41 : 986,617.80 = 388,253.22 : x
  2. Step 2: Convert to fraction form
    714,943.41/986,617.80 = 388,253.22/x
  3. Step 3: Cross multiply
    714,943.41x = 986,617.80 × 388,253.22
  4. Step 4: Simplify right side
    714,943.41x = 383,057,537,759.32
  5. Step 5: Solve for x
    x = 383,057,537,759.32/714,943.41
  6. Step 6: Final answer
    x = 535,787.21

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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.