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Finding the Fourth Proportional to 626,692.94, 864,745 and 358,369.10

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Solution

The fourth proportional to 626,692.94, 864,745 and 358,369.10 is: 494,497.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,692.94 : 864,745 = 358,369.10 : x
  2. Step 2: Convert to fraction form
    626,692.94/864,745 = 358,369.10/x
  3. Step 3: Cross multiply
    626,692.94x = 864,745 × 358,369.10
  4. Step 4: Simplify right side
    626,692.94x = 309,897,887,379.50
  5. Step 5: Solve for x
    x = 309,897,887,379.50/626,692.94
  6. Step 6: Final answer
    x = 494,497.17

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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.