Home / 687,615.90-1,028,507.85-617,048.70

Finding the Fourth Proportional to 687,615.90, 1,028,507.85 and 617,048.70

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Solution

The fourth proportional to 687,615.90, 1,028,507.85 and 617,048.70 is: 922,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,615.90 : 1,028,507.85 = 617,048.70 : x
  2. Step 2: Convert to fraction form
    687,615.90/1,028,507.85 = 617,048.70/x
  3. Step 3: Cross multiply
    687,615.90x = 1,028,507.85 × 617,048.70
  4. Step 4: Simplify right side
    687,615.90x = 634,639,431,782.30
  5. Step 5: Solve for x
    x = 634,639,431,782.30/687,615.90
  6. Step 6: Final answer
    x = 922,956.31

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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.