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Finding the Fourth Proportional to 661,235.58, 912,604.82 and 403,262.22

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Solution

The fourth proportional to 661,235.58, 912,604.82 and 403,262.22 is: 556,562.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,235.58 : 912,604.82 = 403,262.22 : x
  2. Step 2: Convert to fraction form
    661,235.58/912,604.82 = 403,262.22/x
  3. Step 3: Cross multiply
    661,235.58x = 912,604.82 × 403,262.22
  4. Step 4: Simplify right side
    661,235.58x = 368,019,047,101.86
  5. Step 5: Solve for x
    x = 368,019,047,101.86/661,235.58
  6. Step 6: Final answer
    x = 556,562.68

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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.