Home / 610,989.12-916,022.88-400,680

Finding the Fourth Proportional to 610,989.12, 916,022.88 and 400,680

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Solution

The fourth proportional to 610,989.12, 916,022.88 and 400,680 is: 600,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,989.12 : 916,022.88 = 400,680 : x
  2. Step 2: Convert to fraction form
    610,989.12/916,022.88 = 400,680/x
  3. Step 3: Cross multiply
    610,989.12x = 916,022.88 × 400,680
  4. Step 4: Simplify right side
    610,989.12x = 367,032,047,558.40
  5. Step 5: Solve for x
    x = 367,032,047,558.40/610,989.12
  6. Step 6: Final answer
    x = 600,717.81

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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.