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Finding the Fourth Proportional to 657,753.90, 907,703.22 and 355,947.90

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Solution

The fourth proportional to 657,753.90, 907,703.22 and 355,947.90 is: 491,209.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,753.90 : 907,703.22 = 355,947.90 : x
  2. Step 2: Convert to fraction form
    657,753.90/907,703.22 = 355,947.90/x
  3. Step 3: Cross multiply
    657,753.90x = 907,703.22 × 355,947.90
  4. Step 4: Simplify right side
    657,753.90x = 323,095,054,982.24
  5. Step 5: Solve for x
    x = 323,095,054,982.24/657,753.90
  6. Step 6: Final answer
    x = 491,209.64

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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.