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Finding the Fourth Proportional to 653,713.48, 901,865.19 and 378,020.39

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Solution

The fourth proportional to 653,713.48, 901,865.19 and 378,020.39 is: 521,518.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,713.48 : 901,865.19 = 378,020.39 : x
  2. Step 2: Convert to fraction form
    653,713.48/901,865.19 = 378,020.39/x
  3. Step 3: Cross multiply
    653,713.48x = 901,865.19 × 378,020.39
  4. Step 4: Simplify right side
    653,713.48x = 340,923,430,851.22
  5. Step 5: Solve for x
    x = 340,923,430,851.22/653,713.48
  6. Step 6: Final answer
    x = 521,518.13

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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.