Home / 657,687.20-983,681.01-387,170.69

Finding the Fourth Proportional to 657,687.20, 983,681.01 and 387,170.69

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Solution

The fourth proportional to 657,687.20, 983,681.01 and 387,170.69 is: 579,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,687.20 : 983,681.01 = 387,170.69 : x
  2. Step 2: Convert to fraction form
    657,687.20/983,681.01 = 387,170.69/x
  3. Step 3: Cross multiply
    657,687.20x = 983,681.01 × 387,170.69
  4. Step 4: Simplify right side
    657,687.20x = 380,852,450,463.19
  5. Step 5: Solve for x
    x = 380,852,450,463.19/657,687.20
  6. Step 6: Final answer
    x = 579,078.40

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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.