Home / 720,020.40-1,080,030.60-436,585.20

Finding the Fourth Proportional to 720,020.40, 1,080,030.60 and 436,585.20

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Solution

The fourth proportional to 720,020.40, 1,080,030.60 and 436,585.20 is: 654,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,020.40 : 1,080,030.60 = 436,585.20 : x
  2. Step 2: Convert to fraction form
    720,020.40/1,080,030.60 = 436,585.20/x
  3. Step 3: Cross multiply
    720,020.40x = 1,080,030.60 × 436,585.20
  4. Step 4: Simplify right side
    720,020.40x = 471,525,375,507.12
  5. Step 5: Solve for x
    x = 471,525,375,507.12/720,020.40
  6. Step 6: Final answer
    x = 654,877.80

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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.