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Finding the Fourth Proportional to 679,373.60, 1,018,801.20 and 205,901.60

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Solution

The fourth proportional to 679,373.60, 1,018,801.20 and 205,901.60 is: 308,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,373.60 : 1,018,801.20 = 205,901.60 : x
  2. Step 2: Convert to fraction form
    679,373.60/1,018,801.20 = 205,901.60/x
  3. Step 3: Cross multiply
    679,373.60x = 1,018,801.20 × 205,901.60
  4. Step 4: Simplify right side
    679,373.60x = 209,772,797,161.92
  5. Step 5: Solve for x
    x = 209,772,797,161.92/679,373.60
  6. Step 6: Final answer
    x = 308,773.84

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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.