Home / 657,989.63-986,783.51-278,903.25

Finding the Fourth Proportional to 657,989.63, 986,783.51 and 278,903.25

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Solution

The fourth proportional to 657,989.63, 986,783.51 and 278,903.25 is: 418,269.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,989.63 : 986,783.51 = 278,903.25 : x
  2. Step 2: Convert to fraction form
    657,989.63/986,783.51 = 278,903.25/x
  3. Step 3: Cross multiply
    657,989.63x = 986,783.51 × 278,903.25
  4. Step 4: Simplify right side
    657,989.63x = 275,217,128,682.67
  5. Step 5: Solve for x
    x = 275,217,128,682.67/657,989.63
  6. Step 6: Final answer
    x = 418,269.71

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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.