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Finding the Fourth Proportional to 661,633.79, 913,156.54 and 375,093.05

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Solution

The fourth proportional to 661,633.79, 913,156.54 and 375,093.05 is: 517,686.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,633.79 : 913,156.54 = 375,093.05 : x
  2. Step 2: Convert to fraction form
    661,633.79/913,156.54 = 375,093.05/x
  3. Step 3: Cross multiply
    661,633.79x = 913,156.54 × 375,093.05
  4. Step 4: Simplify right side
    661,633.79x = 342,518,666,212.53
  5. Step 5: Solve for x
    x = 342,518,666,212.53/661,633.79
  6. Step 6: Final answer
    x = 517,686.18

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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.