Home / 657,861.28-907,870.53-403,163.26

Finding the Fourth Proportional to 657,861.28, 907,870.53 and 403,163.26

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Solution

The fourth proportional to 657,861.28, 907,870.53 and 403,163.26 is: 556,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,861.28 : 907,870.53 = 403,163.26 : x
  2. Step 2: Convert to fraction form
    657,861.28/907,870.53 = 403,163.26/x
  3. Step 3: Cross multiply
    657,861.28x = 907,870.53 × 403,163.26
  4. Step 4: Simplify right side
    657,861.28x = 366,020,042,532.73
  5. Step 5: Solve for x
    x = 366,020,042,532.73/657,861.28
  6. Step 6: Final answer
    x = 556,378.76

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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.