Home / 1,385,743.36-2,078,790-438,775.60

Finding the Fourth Proportional to 1,385,743.36, 2,078,790 and 438,775.60

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Solution

The fourth proportional to 1,385,743.36, 2,078,790 and 438,775.60 is: 658,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,743.36 : 2,078,790 = 438,775.60 : x
  2. Step 2: Convert to fraction form
    1,385,743.36/2,078,790 = 438,775.60/x
  3. Step 3: Cross multiply
    1,385,743.36x = 2,078,790 × 438,775.60
  4. Step 4: Simplify right side
    1,385,743.36x = 912,122,329,524
  5. Step 5: Solve for x
    x = 912,122,329,524/1,385,743.36
  6. Step 6: Final answer
    x = 658,218.80

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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.