Home / 641,089.47-960,784.78-340,923.72

Finding the Fourth Proportional to 641,089.47, 960,784.78 and 340,923.72

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Solution

The fourth proportional to 641,089.47, 960,784.78 and 340,923.72 is: 510,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,089.47 : 960,784.78 = 340,923.72 : x
  2. Step 2: Convert to fraction form
    641,089.47/960,784.78 = 340,923.72/x
  3. Step 3: Cross multiply
    641,089.47x = 960,784.78 × 340,923.72
  4. Step 4: Simplify right side
    641,089.47x = 327,554,320,464.67
  5. Step 5: Solve for x
    x = 327,554,320,464.67/641,089.47
  6. Step 6: Final answer
    x = 510,933.86

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.