Home / 1,320,145.20-1,977,593.40-720,032.40

Finding the Fourth Proportional to 1,320,145.20, 1,977,593.40 and 720,032.40

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Solution

The fourth proportional to 1,320,145.20, 1,977,593.40 and 720,032.40 is: 1,078,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,145.20 : 1,977,593.40 = 720,032.40 : x
  2. Step 2: Convert to fraction form
    1,320,145.20/1,977,593.40 = 720,032.40/x
  3. Step 3: Cross multiply
    1,320,145.20x = 1,977,593.40 × 720,032.40
  4. Step 4: Simplify right side
    1,320,145.20x = 1,423,931,322,026.16
  5. Step 5: Solve for x
    x = 1,423,931,322,026.16/1,320,145.20
  6. Step 6: Final answer
    x = 1,078,617.20

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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.