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Finding the Fourth Proportional to 671,643.49, 925,291.65 and 467,343.07

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Solution

The fourth proportional to 671,643.49, 925,291.65 and 467,343.07 is: 643,836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,643.49 : 925,291.65 = 467,343.07 : x
  2. Step 2: Convert to fraction form
    671,643.49/925,291.65 = 467,343.07/x
  3. Step 3: Cross multiply
    671,643.49x = 925,291.65 × 467,343.07
  4. Step 4: Simplify right side
    671,643.49x = 432,428,640,356.37
  5. Step 5: Solve for x
    x = 432,428,640,356.37/671,643.49
  6. Step 6: Final answer
    x = 643,836.57

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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.