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Finding the Fourth Proportional to 626,834.63, 865,031.78 and 358,562.63

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Solution

The fourth proportional to 626,834.63, 865,031.78 and 358,562.63 is: 494,816.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,834.63 : 865,031.78 = 358,562.63 : x
  2. Step 2: Convert to fraction form
    626,834.63/865,031.78 = 358,562.63/x
  3. Step 3: Cross multiply
    626,834.63x = 865,031.78 × 358,562.63
  4. Step 4: Simplify right side
    626,834.63x = 310,168,066,641.63
  5. Step 5: Solve for x
    x = 310,168,066,641.63/626,834.63
  6. Step 6: Final answer
    x = 494,816.42

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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.