Home / 714,290.10-985,739.52-392,011.65

Finding the Fourth Proportional to 714,290.10, 985,739.52 and 392,011.65

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Solution

The fourth proportional to 714,290.10, 985,739.52 and 392,011.65 is: 540,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,290.10 : 985,739.52 = 392,011.65 : x
  2. Step 2: Convert to fraction form
    714,290.10/985,739.52 = 392,011.65/x
  3. Step 3: Cross multiply
    714,290.10x = 985,739.52 × 392,011.65
  4. Step 4: Simplify right side
    714,290.10x = 386,421,377,175.45
  5. Step 5: Solve for x
    x = 386,421,377,175.45/714,290.10
  6. Step 6: Final answer
    x = 540,986.61

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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.