Home / 889,254.90-1,333,882.35-390,618.90

Finding the Fourth Proportional to 889,254.90, 1,333,882.35 and 390,618.90

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Solution

The fourth proportional to 889,254.90, 1,333,882.35 and 390,618.90 is: 585,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,254.90 : 1,333,882.35 = 390,618.90 : x
  2. Step 2: Convert to fraction form
    889,254.90/1,333,882.35 = 390,618.90/x
  3. Step 3: Cross multiply
    889,254.90x = 1,333,882.35 × 390,618.90
  4. Step 4: Simplify right side
    889,254.90x = 521,039,656,286.42
  5. Step 5: Solve for x
    x = 521,039,656,286.42/889,254.90
  6. Step 6: Final answer
    x = 585,928.35

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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.