Home / 889,496.40-1,334,244.60-390,860.40

Finding the Fourth Proportional to 889,496.40, 1,334,244.60 and 390,860.40

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Solution

The fourth proportional to 889,496.40, 1,334,244.60 and 390,860.40 is: 586,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,496.40 : 1,334,244.60 = 390,860.40 : x
  2. Step 2: Convert to fraction form
    889,496.40/1,334,244.60 = 390,860.40/x
  3. Step 3: Cross multiply
    889,496.40x = 1,334,244.60 × 390,860.40
  4. Step 4: Simplify right side
    889,496.40x = 521,503,378,053.84
  5. Step 5: Solve for x
    x = 521,503,378,053.84/889,496.40
  6. Step 6: Final answer
    x = 586,290.60

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Double scale
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Similar ratio
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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.