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Finding the Fourth Proportional to 657,701.60, 907,630.60 and 355,895.60

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Solution

The fourth proportional to 657,701.60, 907,630.60 and 355,895.60 is: 491,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,701.60 : 907,630.60 = 355,895.60 : x
  2. Step 2: Convert to fraction form
    657,701.60/907,630.60 = 355,895.60/x
  3. Step 3: Cross multiply
    657,701.60x = 907,630.60 × 355,895.60
  4. Step 4: Simplify right side
    657,701.60x = 323,021,736,965.36
  5. Step 5: Solve for x
    x = 323,021,736,965.36/657,701.60
  6. Step 6: Final answer
    x = 491,137.22

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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.