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Finding the Fourth Proportional to 613,925.64, 921,516.87 and 506,968.81

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Solution

The fourth proportional to 613,925.64, 921,516.87 and 506,968.81 is: 760,972.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,925.64 : 921,516.87 = 506,968.81 : x
  2. Step 2: Convert to fraction form
    613,925.64/921,516.87 = 506,968.81/x
  3. Step 3: Cross multiply
    613,925.64x = 921,516.87 × 506,968.81
  4. Step 4: Simplify right side
    613,925.64x = 467,180,310,978.83
  5. Step 5: Solve for x
    x = 467,180,310,978.83/613,925.64
  6. Step 6: Final answer
    x = 760,972.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.