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Finding the Fourth Proportional to 652,668.01, 900,738.84 and 380,823.48

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Solution

The fourth proportional to 652,668.01, 900,738.84 and 380,823.48 is: 525,569.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,668.01 : 900,738.84 = 380,823.48 : x
  2. Step 2: Convert to fraction form
    652,668.01/900,738.84 = 380,823.48/x
  3. Step 3: Cross multiply
    652,668.01x = 900,738.84 × 380,823.48
  4. Step 4: Simplify right side
    652,668.01x = 343,022,499,781.39
  5. Step 5: Solve for x
    x = 343,022,499,781.39/652,668.01
  6. Step 6: Final answer
    x = 525,569.66

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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.