Home / 780,021.20-1,170,031.80-479,527.40

Finding the Fourth Proportional to 780,021.20, 1,170,031.80 and 479,527.40

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Solution

The fourth proportional to 780,021.20, 1,170,031.80 and 479,527.40 is: 719,291.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,021.20 : 1,170,031.80 = 479,527.40 : x
  2. Step 2: Convert to fraction form
    780,021.20/1,170,031.80 = 479,527.40/x
  3. Step 3: Cross multiply
    780,021.20x = 1,170,031.80 × 479,527.40
  4. Step 4: Simplify right side
    780,021.20x = 561,062,306,971.32
  5. Step 5: Solve for x
    x = 561,062,306,971.32/780,021.20
  6. Step 6: Final answer
    x = 719,291.10

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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.