Home / 1,389,348.80-2,084,138.40-442,692.80

Finding the Fourth Proportional to 1,389,348.80, 2,084,138.40 and 442,692.80

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Solution

The fourth proportional to 1,389,348.80, 2,084,138.40 and 442,692.80 is: 664,075.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,348.80 : 2,084,138.40 = 442,692.80 : x
  2. Step 2: Convert to fraction form
    1,389,348.80/2,084,138.40 = 442,692.80/x
  3. Step 3: Cross multiply
    1,389,348.80x = 2,084,138.40 × 442,692.80
  4. Step 4: Simplify right side
    1,389,348.80x = 922,633,063,883.52
  5. Step 5: Solve for x
    x = 922,633,063,883.52/1,389,348.80
  6. Step 6: Final answer
    x = 664,075.91

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Double scale
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1.5x scale

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.