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Finding the Fourth Proportional to 676,278, 933,263.64 and 374,472

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Solution

The fourth proportional to 676,278, 933,263.64 and 374,472 is: 516,771.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,278 : 933,263.64 = 374,472 : x
  2. Step 2: Convert to fraction form
    676,278/933,263.64 = 374,472/x
  3. Step 3: Cross multiply
    676,278x = 933,263.64 × 374,472
  4. Step 4: Simplify right side
    676,278x = 349,481,101,798.08
  5. Step 5: Solve for x
    x = 349,481,101,798.08/676,278
  6. Step 6: Final answer
    x = 516,771.36

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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.