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Finding the Fourth Proportional to 626,689.43, 864,740.17 and 358,365.59

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Solution

The fourth proportional to 626,689.43, 864,740.17 and 358,365.59 is: 494,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,689.43 : 864,740.17 = 358,365.59 : x
  2. Step 2: Convert to fraction form
    626,689.43/864,740.17 = 358,365.59/x
  3. Step 3: Cross multiply
    626,689.43x = 864,740.17 × 358,365.59
  4. Step 4: Simplify right side
    626,689.43x = 309,893,121,218.75
  5. Step 5: Solve for x
    x = 309,893,121,218.75/626,689.43
  6. Step 6: Final answer
    x = 494,492.34

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1.5x scale

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.