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Finding the Fourth Proportional to 613,718.48, 846,688.20 and 375,392.72

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Solution

The fourth proportional to 613,718.48, 846,688.20 and 375,392.72 is: 517,893.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,718.48 : 846,688.20 = 375,392.72 : x
  2. Step 2: Convert to fraction form
    613,718.48/846,688.20 = 375,392.72/x
  3. Step 3: Cross multiply
    613,718.48x = 846,688.20 × 375,392.72
  4. Step 4: Simplify right side
    613,718.48x = 317,840,586,389.90
  5. Step 5: Solve for x
    x = 317,840,586,389.90/613,718.48
  6. Step 6: Final answer
    x = 517,893.13

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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.