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Finding the Fourth Proportional to 520,029.80, 779,430.30 and 220,509.80

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Solution

The fourth proportional to 520,029.80, 779,430.30 and 220,509.80 is: 330,504.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,029.80 : 779,430.30 = 220,509.80 : x
  2. Step 2: Convert to fraction form
    520,029.80/779,430.30 = 220,509.80/x
  3. Step 3: Cross multiply
    520,029.80x = 779,430.30 × 220,509.80
  4. Step 4: Simplify right side
    520,029.80x = 171,872,019,566.94
  5. Step 5: Solve for x
    x = 171,872,019,566.94/520,029.80
  6. Step 6: Final answer
    x = 330,504.17

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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.