Home / 380,987.04-570,979.08-212,586.60

Finding the Fourth Proportional to 380,987.04, 570,979.08 and 212,586.60

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Solution

The fourth proportional to 380,987.04, 570,979.08 and 212,586.60 is: 318,600.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,987.04 : 570,979.08 = 212,586.60 : x
  2. Step 2: Convert to fraction form
    380,987.04/570,979.08 = 212,586.60/x
  3. Step 3: Cross multiply
    380,987.04x = 570,979.08 × 212,586.60
  4. Step 4: Simplify right side
    380,987.04x = 121,382,501,288.33
  5. Step 5: Solve for x
    x = 121,382,501,288.33/380,987.04
  6. Step 6: Final answer
    x = 318,600.08

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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.