Home / 657,865.68-907,862.07-385,938.20

Finding the Fourth Proportional to 657,865.68, 907,862.07 and 385,938.20

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Solution

The fourth proportional to 657,865.68, 907,862.07 and 385,938.20 is: 532,599.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,865.68 : 907,862.07 = 385,938.20 : x
  2. Step 2: Convert to fraction form
    657,865.68/907,862.07 = 385,938.20/x
  3. Step 3: Cross multiply
    657,865.68x = 907,862.07 × 385,938.20
  4. Step 4: Simplify right side
    657,865.68x = 350,378,648,604.76
  5. Step 5: Solve for x
    x = 350,378,648,604.76/657,865.68
  6. Step 6: Final answer
    x = 532,599.07

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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.