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Finding the Fourth Proportional to 622,663.70, 933,995.55 and 561,646.40

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Solution

The fourth proportional to 622,663.70, 933,995.55 and 561,646.40 is: 842,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,663.70 : 933,995.55 = 561,646.40 : x
  2. Step 2: Convert to fraction form
    622,663.70/933,995.55 = 561,646.40/x
  3. Step 3: Cross multiply
    622,663.70x = 933,995.55 × 561,646.40
  4. Step 4: Simplify right side
    622,663.70x = 524,575,238,273.52
  5. Step 5: Solve for x
    x = 524,575,238,273.52/622,663.70
  6. Step 6: Final answer
    x = 842,469.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.