Home / 879,282.80-1,318,924.20-520,031.60

Finding the Fourth Proportional to 879,282.80, 1,318,924.20 and 520,031.60

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Solution

The fourth proportional to 879,282.80, 1,318,924.20 and 520,031.60 is: 780,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,282.80 : 1,318,924.20 = 520,031.60 : x
  2. Step 2: Convert to fraction form
    879,282.80/1,318,924.20 = 520,031.60/x
  3. Step 3: Cross multiply
    879,282.80x = 1,318,924.20 × 520,031.60
  4. Step 4: Simplify right side
    879,282.80x = 685,882,262,004.72
  5. Step 5: Solve for x
    x = 685,882,262,004.72/879,282.80
  6. Step 6: Final answer
    x = 780,047.40

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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.