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Finding the Fourth Proportional to 661,825.96, 913,328.94 and 360,019.96

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Solution

The fourth proportional to 661,825.96, 913,328.94 and 360,019.96 is: 496,832.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,825.96 : 913,328.94 = 360,019.96 : x
  2. Step 2: Convert to fraction form
    661,825.96/913,328.94 = 360,019.96/x
  3. Step 3: Cross multiply
    661,825.96x = 913,328.94 × 360,019.96
  4. Step 4: Simplify right side
    661,825.96x = 328,816,648,445.64
  5. Step 5: Solve for x
    x = 328,816,648,445.64/661,825.96
  6. Step 6: Final answer
    x = 496,832.50

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1.5x scale

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.