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Finding the Fourth Proportional to 657,720.27, 907,653.47 and 355,914.27

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Solution

The fourth proportional to 657,720.27, 907,653.47 and 355,914.27 is: 491,161.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,720.27 : 907,653.47 = 355,914.27 : x
  2. Step 2: Convert to fraction form
    657,720.27/907,653.47 = 355,914.27/x
  3. Step 3: Cross multiply
    657,720.27x = 907,653.47 × 355,914.27
  4. Step 4: Simplify right side
    657,720.27x = 323,046,820,408.45
  5. Step 5: Solve for x
    x = 323,046,820,408.45/657,720.27
  6. Step 6: Final answer
    x = 491,161.42

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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.