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Finding the Fourth Proportional to 520,029.10, 779,986.05 and 146,089.90

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Solution

The fourth proportional to 520,029.10, 779,986.05 and 146,089.90 is: 219,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,029.10 : 779,986.05 = 146,089.90 : x
  2. Step 2: Convert to fraction form
    520,029.10/779,986.05 = 146,089.90/x
  3. Step 3: Cross multiply
    520,029.10x = 779,986.05 × 146,089.90
  4. Step 4: Simplify right side
    520,029.10x = 113,948,084,045.90
  5. Step 5: Solve for x
    x = 113,948,084,045.90/520,029.10
  6. Step 6: Final answer
    x = 219,118.67

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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.