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Finding the Fourth Proportional to 626,880.78, 865,095.48 and 358,608.78

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Solution

The fourth proportional to 626,880.78, 865,095.48 and 358,608.78 is: 494,880.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,880.78 : 865,095.48 = 358,608.78 : x
  2. Step 2: Convert to fraction form
    626,880.78/865,095.48 = 358,608.78/x
  3. Step 3: Cross multiply
    626,880.78x = 865,095.48 × 358,608.78
  4. Step 4: Simplify right side
    626,880.78x = 310,230,834,666.31
  5. Step 5: Solve for x
    x = 310,230,834,666.31/626,880.78
  6. Step 6: Final answer
    x = 494,880.12

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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.