Home / 1,072,288.20-1,480,089.90-690,315

Finding the Fourth Proportional to 1,072,288.20, 1,480,089.90 and 690,315

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Solution

The fourth proportional to 1,072,288.20, 1,480,089.90 and 690,315 is: 952,848.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,288.20 : 1,480,089.90 = 690,315 : x
  2. Step 2: Convert to fraction form
    1,072,288.20/1,480,089.90 = 690,315/x
  3. Step 3: Cross multiply
    1,072,288.20x = 1,480,089.90 × 690,315
  4. Step 4: Simplify right side
    1,072,288.20x = 1,021,728,259,318.50
  5. Step 5: Solve for x
    x = 1,021,728,259,318.50/1,072,288.20
  6. Step 6: Final answer
    x = 952,848.55

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