Home / 916,638.84-1,264,942.54-508,716.96

Finding the Fourth Proportional to 916,638.84, 1,264,942.54 and 508,716.96

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Solution

The fourth proportional to 916,638.84, 1,264,942.54 and 508,716.96 is: 702,018.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,638.84 : 1,264,942.54 = 508,716.96 : x
  2. Step 2: Convert to fraction form
    916,638.84/1,264,942.54 = 508,716.96/x
  3. Step 3: Cross multiply
    916,638.84x = 1,264,942.54 × 508,716.96
  4. Step 4: Simplify right side
    916,638.84x = 643,497,723,523.48
  5. Step 5: Solve for x
    x = 643,497,723,523.48/916,638.84
  6. Step 6: Final answer
    x = 702,018.83

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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.