Home / 1,291,283.80-1,936,925.70-820,058.20

Finding the Fourth Proportional to 1,291,283.80, 1,936,925.70 and 820,058.20

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Solution

The fourth proportional to 1,291,283.80, 1,936,925.70 and 820,058.20 is: 1,230,087.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,283.80 : 1,936,925.70 = 820,058.20 : x
  2. Step 2: Convert to fraction form
    1,291,283.80/1,936,925.70 = 820,058.20/x
  3. Step 3: Cross multiply
    1,291,283.80x = 1,936,925.70 × 820,058.20
  4. Step 4: Simplify right side
    1,291,283.80x = 1,588,391,803,075.74
  5. Step 5: Solve for x
    x = 1,588,391,803,075.74/1,291,283.80
  6. Step 6: Final answer
    x = 1,230,087.30

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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.