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Finding the Fourth Proportional to 657,024.56, 906,696 and 355,220.72

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Solution

The fourth proportional to 657,024.56, 906,696 and 355,220.72 is: 490,205.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,024.56 : 906,696 = 355,220.72 : x
  2. Step 2: Convert to fraction form
    657,024.56/906,696 = 355,220.72/x
  3. Step 3: Cross multiply
    657,024.56x = 906,696 × 355,220.72
  4. Step 4: Simplify right side
    657,024.56x = 322,077,205,941.12
  5. Step 5: Solve for x
    x = 322,077,205,941.12/657,024.56
  6. Step 6: Final answer
    x = 490,205.73

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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.