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Finding the Fourth Proportional to 657,620.30, 918,568.90 and 657,620.30

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Solution

The fourth proportional to 657,620.30, 918,568.90 and 657,620.30 is: 918,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,620.30 : 918,568.90 = 657,620.30 : x
  2. Step 2: Convert to fraction form
    657,620.30/918,568.90 = 657,620.30/x
  3. Step 3: Cross multiply
    657,620.30x = 918,568.90 × 657,620.30
  4. Step 4: Simplify right side
    657,620.30x = 604,069,555,588.67
  5. Step 5: Solve for x
    x = 604,069,555,588.67/657,620.30
  6. Step 6: Final answer
    x = 918,568.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.