Home / 916,780-1,265,236.47-534,929.80

Finding the Fourth Proportional to 916,780, 1,265,236.47 and 534,929.80

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Solution

The fourth proportional to 916,780, 1,265,236.47 and 534,929.80 is: 738,249.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,780 : 1,265,236.47 = 534,929.80 : x
  2. Step 2: Convert to fraction form
    916,780/1,265,236.47 = 534,929.80/x
  3. Step 3: Cross multiply
    916,780x = 1,265,236.47 × 534,929.80
  4. Step 4: Simplify right side
    916,780x = 676,812,691,849.81
  5. Step 5: Solve for x
    x = 676,812,691,849.81/916,780
  6. Step 6: Final answer
    x = 738,249.84

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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.