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Finding the Fourth Proportional to 662,216.80, 993,325.20 and 520,499.20

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Solution

The fourth proportional to 662,216.80, 993,325.20 and 520,499.20 is: 780,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,216.80 : 993,325.20 = 520,499.20 : x
  2. Step 2: Convert to fraction form
    662,216.80/993,325.20 = 520,499.20/x
  3. Step 3: Cross multiply
    662,216.80x = 993,325.20 × 520,499.20
  4. Step 4: Simplify right side
    662,216.80x = 517,024,971,939.84
  5. Step 5: Solve for x
    x = 517,024,971,939.84/662,216.80
  6. Step 6: Final answer
    x = 780,748.80

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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.