Home / 716,644.58-988,957.01-389,946.57

Finding the Fourth Proportional to 716,644.58, 988,957.01 and 389,946.57

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Solution

The fourth proportional to 716,644.58, 988,957.01 and 389,946.57 is: 538,119.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,644.58 : 988,957.01 = 389,946.57 : x
  2. Step 2: Convert to fraction form
    716,644.58/988,957.01 = 389,946.57/x
  3. Step 3: Cross multiply
    716,644.58x = 988,957.01 × 389,946.57
  4. Step 4: Simplify right side
    716,644.58x = 385,640,391,977.22
  5. Step 5: Solve for x
    x = 385,640,391,977.22/716,644.58
  6. Step 6: Final answer
    x = 538,119.46

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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.