Home / 384,921.40-577,382.10-118,658.20

Finding the Fourth Proportional to 384,921.40, 577,382.10 and 118,658.20

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Solution

The fourth proportional to 384,921.40, 577,382.10 and 118,658.20 is: 177,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,921.40 : 577,382.10 = 118,658.20 : x
  2. Step 2: Convert to fraction form
    384,921.40/577,382.10 = 118,658.20/x
  3. Step 3: Cross multiply
    384,921.40x = 577,382.10 × 118,658.20
  4. Step 4: Simplify right side
    384,921.40x = 68,511,120,698.22
  5. Step 5: Solve for x
    x = 68,511,120,698.22/384,921.40
  6. Step 6: Final answer
    x = 177,987.30

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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.