Home / 879,291.80-1,318,937.70-520,040.60

Finding the Fourth Proportional to 879,291.80, 1,318,937.70 and 520,040.60

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Solution

The fourth proportional to 879,291.80, 1,318,937.70 and 520,040.60 is: 780,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,291.80 : 1,318,937.70 = 520,040.60 : x
  2. Step 2: Convert to fraction form
    879,291.80/1,318,937.70 = 520,040.60/x
  3. Step 3: Cross multiply
    879,291.80x = 1,318,937.70 × 520,040.60
  4. Step 4: Simplify right side
    879,291.80x = 685,901,152,870.62
  5. Step 5: Solve for x
    x = 685,901,152,870.62/879,291.80
  6. Step 6: Final answer
    x = 780,060.90

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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.