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Finding the Fourth Proportional to 520,453.13, 780,679.97 and 146,476.13

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Solution

The fourth proportional to 520,453.13, 780,679.97 and 146,476.13 is: 219,714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,453.13 : 780,679.97 = 146,476.13 : x
  2. Step 2: Convert to fraction form
    520,453.13/780,679.97 = 146,476.13/x
  3. Step 3: Cross multiply
    520,453.13x = 780,679.97 × 146,476.13
  4. Step 4: Simplify right side
    520,453.13x = 114,350,980,041.74
  5. Step 5: Solve for x
    x = 114,350,980,041.74/520,453.13
  6. Step 6: Final answer
    x = 219,714.27

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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.