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Finding the Fourth Proportional to 670,642.47, 925,467.80 and 368,836.47

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Solution

The fourth proportional to 670,642.47, 925,467.80 and 368,836.47 is: 508,983.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,642.47 : 925,467.80 = 368,836.47 : x
  2. Step 2: Convert to fraction form
    670,642.47/925,467.80 = 368,836.47/x
  3. Step 3: Cross multiply
    670,642.47x = 925,467.80 × 368,836.47
  4. Step 4: Simplify right side
    670,642.47x = 341,346,274,606.48
  5. Step 5: Solve for x
    x = 341,346,274,606.48/670,642.47
  6. Step 6: Final answer
    x = 508,983.98

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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.