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Finding the Fourth Proportional to 520,551.48, 780,758.10 and 146,603.64

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Solution

The fourth proportional to 520,551.48, 780,758.10 and 146,603.64 is: 219,885.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,551.48 : 780,758.10 = 146,603.64 : x
  2. Step 2: Convert to fraction form
    520,551.48/780,758.10 = 146,603.64/x
  3. Step 3: Cross multiply
    520,551.48x = 780,758.10 × 146,603.64
  4. Step 4: Simplify right side
    520,551.48x = 114,461,979,419.48
  5. Step 5: Solve for x
    x = 114,461,979,419.48/520,551.48
  6. Step 6: Final answer
    x = 219,885.99

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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.