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Finding the Fourth Proportional to 657,158.55, 906,878.88 and 355,352.55

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Solution

The fourth proportional to 657,158.55, 906,878.88 and 355,352.55 is: 490,386.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,158.55 : 906,878.88 = 355,352.55 : x
  2. Step 2: Convert to fraction form
    657,158.55/906,878.88 = 355,352.55/x
  3. Step 3: Cross multiply
    657,158.55x = 906,878.88 × 355,352.55
  4. Step 4: Simplify right side
    657,158.55x = 322,261,722,549.14
  5. Step 5: Solve for x
    x = 322,261,722,549.14/657,158.55
  6. Step 6: Final answer
    x = 490,386.56

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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.