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Finding the Fourth Proportional to 520,326.94, 780,624.71 and 160,489.65

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Solution

The fourth proportional to 520,326.94, 780,624.71 and 160,489.65 is: 240,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,326.94 : 780,624.71 = 160,489.65 : x
  2. Step 2: Convert to fraction form
    520,326.94/780,624.71 = 160,489.65/x
  3. Step 3: Cross multiply
    520,326.94x = 780,624.71 × 160,489.65
  4. Step 4: Simplify right side
    520,326.94x = 125,282,186,489.25
  5. Step 5: Solve for x
    x = 125,282,186,489.25/520,326.94
  6. Step 6: Final answer
    x = 240,775.90

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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.