Home / 687,614.40-1,028,505.60-617,047.20

Finding the Fourth Proportional to 687,614.40, 1,028,505.60 and 617,047.20

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Solution

The fourth proportional to 687,614.40, 1,028,505.60 and 617,047.20 is: 922,954.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,614.40 : 1,028,505.60 = 617,047.20 : x
  2. Step 2: Convert to fraction form
    687,614.40/1,028,505.60 = 617,047.20/x
  3. Step 3: Cross multiply
    687,614.40x = 1,028,505.60 × 617,047.20
  4. Step 4: Simplify right side
    687,614.40x = 634,636,500,664.32
  5. Step 5: Solve for x
    x = 634,636,500,664.32/687,614.40
  6. Step 6: Final answer
    x = 922,954.06

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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.