Home / 1,420,643.70-2,129,151.15-578,243.70

Finding the Fourth Proportional to 1,420,643.70, 2,129,151.15 and 578,243.70

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Solution

The fourth proportional to 1,420,643.70, 2,129,151.15 and 578,243.70 is: 866,627.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,643.70 : 2,129,151.15 = 578,243.70 : x
  2. Step 2: Convert to fraction form
    1,420,643.70/2,129,151.15 = 578,243.70/x
  3. Step 3: Cross multiply
    1,420,643.70x = 2,129,151.15 × 578,243.70
  4. Step 4: Simplify right side
    1,420,643.70x = 1,231,168,238,835.25
  5. Step 5: Solve for x
    x = 1,231,168,238,835.25/1,420,643.70
  6. Step 6: Final answer
    x = 866,627.04

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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.