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Finding the Fourth Proportional to 738,877.68, 1,019,650.69 and 399,345.93

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Solution

The fourth proportional to 738,877.68, 1,019,650.69 and 399,345.93 is: 551,097.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,877.68 : 1,019,650.69 = 399,345.93 : x
  2. Step 2: Convert to fraction form
    738,877.68/1,019,650.69 = 399,345.93/x
  3. Step 3: Cross multiply
    738,877.68x = 1,019,650.69 × 399,345.93
  4. Step 4: Simplify right side
    738,877.68x = 407,193,353,073.19
  5. Step 5: Solve for x
    x = 407,193,353,073.19/738,877.68
  6. Step 6: Final answer
    x = 551,097.11

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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.