Home / 427,106.66-588,679.38-390,907.62

Finding the Fourth Proportional to 427,106.66, 588,679.38 and 390,907.62

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Solution

The fourth proportional to 427,106.66, 588,679.38 and 390,907.62 is: 538,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,106.66 : 588,679.38 = 390,907.62 : x
  2. Step 2: Convert to fraction form
    427,106.66/588,679.38 = 390,907.62/x
  3. Step 3: Cross multiply
    427,106.66x = 588,679.38 × 390,907.62
  4. Step 4: Simplify right side
    427,106.66x = 230,119,255,378.88
  5. Step 5: Solve for x
    x = 230,119,255,378.88/427,106.66
  6. Step 6: Final answer
    x = 538,786.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.