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Finding the Fourth Proportional to 520,532.20, 779,243.10 and 310,061.80

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Solution

The fourth proportional to 520,532.20, 779,243.10 and 310,061.80 is: 464,166.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,532.20 : 779,243.10 = 310,061.80 : x
  2. Step 2: Convert to fraction form
    520,532.20/779,243.10 = 310,061.80/x
  3. Step 3: Cross multiply
    520,532.20x = 779,243.10 × 310,061.80
  4. Step 4: Simplify right side
    520,532.20x = 241,613,518,223.58
  5. Step 5: Solve for x
    x = 241,613,518,223.58/520,532.20
  6. Step 6: Final answer
    x = 464,166.32

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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.