Home / 1,280,429.30-1,920,075.32-681,264.20

Finding the Fourth Proportional to 1,280,429.30, 1,920,075.32 and 681,264.20

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Solution

The fourth proportional to 1,280,429.30, 1,920,075.32 and 681,264.20 is: 1,021,593.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,429.30 : 1,920,075.32 = 681,264.20 : x
  2. Step 2: Convert to fraction form
    1,280,429.30/1,920,075.32 = 681,264.20/x
  3. Step 3: Cross multiply
    1,280,429.30x = 1,920,075.32 × 681,264.20
  4. Step 4: Simplify right side
    1,280,429.30x = 1,308,078,563,812.85
  5. Step 5: Solve for x
    x = 1,308,078,563,812.85/1,280,429.30
  6. Step 6: Final answer
    x = 1,021,593.75

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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.