Home / 679,343.60-1,018,756.20-205,871.60

Finding the Fourth Proportional to 679,343.60, 1,018,756.20 and 205,871.60

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Solution

The fourth proportional to 679,343.60, 1,018,756.20 and 205,871.60 is: 308,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,343.60 : 1,018,756.20 = 205,871.60 : x
  2. Step 2: Convert to fraction form
    679,343.60/1,018,756.20 = 205,871.60/x
  3. Step 3: Cross multiply
    679,343.60x = 1,018,756.20 × 205,871.60
  4. Step 4: Simplify right side
    679,343.60x = 209,732,968,903.92
  5. Step 5: Solve for x
    x = 209,732,968,903.92/679,343.60
  6. Step 6: Final answer
    x = 308,728.85

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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.