Home / 384,923.40-577,385.10-118,660.20

Finding the Fourth Proportional to 384,923.40, 577,385.10 and 118,660.20

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Solution

The fourth proportional to 384,923.40, 577,385.10 and 118,660.20 is: 177,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,923.40 : 577,385.10 = 118,660.20 : x
  2. Step 2: Convert to fraction form
    384,923.40/577,385.10 = 118,660.20/x
  3. Step 3: Cross multiply
    384,923.40x = 577,385.10 × 118,660.20
  4. Step 4: Simplify right side
    384,923.40x = 68,512,631,443.02
  5. Step 5: Solve for x
    x = 68,512,631,443.02/384,923.40
  6. Step 6: Final answer
    x = 177,990.30

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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.