Home / 657,865.18-907,861.38-385,937.70

Finding the Fourth Proportional to 657,865.18, 907,861.38 and 385,937.70

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Solution

The fourth proportional to 657,865.18, 907,861.38 and 385,937.70 is: 532,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,865.18 : 907,861.38 = 385,937.70 : x
  2. Step 2: Convert to fraction form
    657,865.18/907,861.38 = 385,937.70/x
  3. Step 3: Cross multiply
    657,865.18x = 907,861.38 × 385,937.70
  4. Step 4: Simplify right side
    657,865.18x = 350,377,932,916.03
  5. Step 5: Solve for x
    x = 350,377,932,916.03/657,865.18
  6. Step 6: Final answer
    x = 532,598.39

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1.5x scale

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.