Home / 714,979.37-986,668.16-388,290.08

Finding the Fourth Proportional to 714,979.37, 986,668.16 and 388,290.08

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Solution

The fourth proportional to 714,979.37, 986,668.16 and 388,290.08 is: 535,838.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,979.37 : 986,668.16 = 388,290.08 : x
  2. Step 2: Convert to fraction form
    714,979.37/986,668.16 = 388,290.08/x
  3. Step 3: Cross multiply
    714,979.37x = 986,668.16 × 388,290.08
  4. Step 4: Simplify right side
    714,979.37x = 383,113,459,305.07
  5. Step 5: Solve for x
    x = 383,113,459,305.07/714,979.37
  6. Step 6: Final answer
    x = 535,838.48

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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.