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Finding the Fourth Proportional to 657,630.45, 921,615.75 and 657,630.45

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Solution

The fourth proportional to 657,630.45, 921,615.75 and 657,630.45 is: 921,615.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,630.45 : 921,615.75 = 657,630.45 : x
  2. Step 2: Convert to fraction form
    657,630.45/921,615.75 = 657,630.45/x
  3. Step 3: Cross multiply
    657,630.45x = 921,615.75 × 657,630.45
  4. Step 4: Simplify right side
    657,630.45x = 606,082,580,399.59
  5. Step 5: Solve for x
    x = 606,082,580,399.59/657,630.45
  6. Step 6: Final answer
    x = 921,615.75

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1.5x scale

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.