Home / 1,070,403.20-1,605,820.80-312,243.20

Finding the Fourth Proportional to 1,070,403.20, 1,605,820.80 and 312,243.20

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Solution

The fourth proportional to 1,070,403.20, 1,605,820.80 and 312,243.20 is: 468,427.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,403.20 : 1,605,820.80 = 312,243.20 : x
  2. Step 2: Convert to fraction form
    1,070,403.20/1,605,820.80 = 312,243.20/x
  3. Step 3: Cross multiply
    1,070,403.20x = 1,605,820.80 × 312,243.20
  4. Step 4: Simplify right side
    1,070,403.20x = 501,406,625,218.56
  5. Step 5: Solve for x
    x = 501,406,625,218.56/1,070,403.20
  6. Step 6: Final answer
    x = 468,427.81

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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.