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Finding the Fourth Proportional to 661,381.06, 912,701.37 and 359,575.06

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Solution

The fourth proportional to 661,381.06, 912,701.37 and 359,575.06 is: 496,211.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,381.06 : 912,701.37 = 359,575.06 : x
  2. Step 2: Convert to fraction form
    661,381.06/912,701.37 = 359,575.06/x
  3. Step 3: Cross multiply
    661,381.06x = 912,701.37 × 359,575.06
  4. Step 4: Simplify right side
    661,381.06x = 328,184,649,879.83
  5. Step 5: Solve for x
    x = 328,184,649,879.83/661,381.06
  6. Step 6: Final answer
    x = 496,211.14

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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.