Home / 699,228.72-964,928.64-389,126.07

Finding the Fourth Proportional to 699,228.72, 964,928.64 and 389,126.07

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Solution

The fourth proportional to 699,228.72, 964,928.64 and 389,126.07 is: 536,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,228.72 : 964,928.64 = 389,126.07 : x
  2. Step 2: Convert to fraction form
    699,228.72/964,928.64 = 389,126.07/x
  3. Step 3: Cross multiply
    699,228.72x = 964,928.64 × 389,126.07
  4. Step 4: Simplify right side
    699,228.72x = 375,478,889,513.65
  5. Step 5: Solve for x
    x = 375,478,889,513.65/699,228.72
  6. Step 6: Final answer
    x = 536,990.08

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Why These Related Problems?

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