Home / 890,987.20-1,336,642.80-291,781.60

Finding the Fourth Proportional to 890,987.20, 1,336,642.80 and 291,781.60

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Solution

The fourth proportional to 890,987.20, 1,336,642.80 and 291,781.60 is: 437,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,987.20 : 1,336,642.80 = 291,781.60 : x
  2. Step 2: Convert to fraction form
    890,987.20/1,336,642.80 = 291,781.60/x
  3. Step 3: Cross multiply
    890,987.20x = 1,336,642.80 × 291,781.60
  4. Step 4: Simplify right side
    890,987.20x = 390,007,774,812.48
  5. Step 5: Solve for x
    x = 390,007,774,812.48/890,987.20
  6. Step 6: Final answer
    x = 437,725.45

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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.