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Finding the Fourth Proportional to 626,689.31, 864,740.00 and 358,365.47

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Solution

The fourth proportional to 626,689.31, 864,740.00 and 358,365.47 is: 494,492.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,689.31 : 864,740.00 = 358,365.47 : x
  2. Step 2: Convert to fraction form
    626,689.31/864,740.00 = 358,365.47/x
  3. Step 3: Cross multiply
    626,689.31x = 864,740.00 × 358,365.47
  4. Step 4: Simplify right side
    626,689.31x = 309,892,953,100.01
  5. Step 5: Solve for x
    x = 309,892,953,100.01/626,689.31
  6. Step 6: Final answer
    x = 494,492.17

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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.