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Finding the Fourth Proportional to 657,124.44, 906,811.38 and 370,640.40

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Solution

The fourth proportional to 657,124.44, 906,811.38 and 370,640.40 is: 511,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,124.44 : 906,811.38 = 370,640.40 : x
  2. Step 2: Convert to fraction form
    657,124.44/906,811.38 = 370,640.40/x
  3. Step 3: Cross multiply
    657,124.44x = 906,811.38 × 370,640.40
  4. Step 4: Simplify right side
    657,124.44x = 336,100,932,607.75
  5. Step 5: Solve for x
    x = 336,100,932,607.75/657,124.44
  6. Step 6: Final answer
    x = 511,472.28

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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.