Home / 714,844.80-986,488.50-388,158.23

Finding the Fourth Proportional to 714,844.80, 986,488.50 and 388,158.23

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Solution

The fourth proportional to 714,844.80, 986,488.50 and 388,158.23 is: 535,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,844.80 : 986,488.50 = 388,158.23 : x
  2. Step 2: Convert to fraction form
    714,844.80/986,488.50 = 388,158.23/x
  3. Step 3: Cross multiply
    714,844.80x = 986,488.50 × 388,158.23
  4. Step 4: Simplify right side
    714,844.80x = 382,913,625,142.91
  5. Step 5: Solve for x
    x = 382,913,625,142.91/714,844.80
  6. Step 6: Final answer
    x = 535,659.80

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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.