Home / 1,070,399.20-1,605,814.80-312,239.20

Finding the Fourth Proportional to 1,070,399.20, 1,605,814.80 and 312,239.20

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Solution

The fourth proportional to 1,070,399.20, 1,605,814.80 and 312,239.20 is: 468,421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,399.20 : 1,605,814.80 = 312,239.20 : x
  2. Step 2: Convert to fraction form
    1,070,399.20/1,605,814.80 = 312,239.20/x
  3. Step 3: Cross multiply
    1,070,399.20x = 1,605,814.80 × 312,239.20
  4. Step 4: Simplify right side
    1,070,399.20x = 501,398,328,500.16
  5. Step 5: Solve for x
    x = 501,398,328,500.16/1,070,399.20
  6. Step 6: Final answer
    x = 468,421.81

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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.