Home / 993,307.80-1,489,961.70-520,138.20

Finding the Fourth Proportional to 993,307.80, 1,489,961.70 and 520,138.20

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Solution

The fourth proportional to 993,307.80, 1,489,961.70 and 520,138.20 is: 780,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,307.80 : 1,489,961.70 = 520,138.20 : x
  2. Step 2: Convert to fraction form
    993,307.80/1,489,961.70 = 520,138.20/x
  3. Step 3: Cross multiply
    993,307.80x = 1,489,961.70 × 520,138.20
  4. Step 4: Simplify right side
    993,307.80x = 774,985,996,706.94
  5. Step 5: Solve for x
    x = 774,985,996,706.94/993,307.80
  6. Step 6: Final answer
    x = 780,207.30

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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.