Home / 929,638.70-1,283,030.10-521,764.82

Finding the Fourth Proportional to 929,638.70, 1,283,030.10 and 521,764.82

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Solution

The fourth proportional to 929,638.70, 1,283,030.10 and 521,764.82 is: 720,107.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,638.70 : 1,283,030.10 = 521,764.82 : x
  2. Step 2: Convert to fraction form
    929,638.70/1,283,030.10 = 521,764.82/x
  3. Step 3: Cross multiply
    929,638.70x = 1,283,030.10 × 521,764.82
  4. Step 4: Simplify right side
    929,638.70x = 669,439,969,181.08
  5. Step 5: Solve for x
    x = 669,439,969,181.08/929,638.70
  6. Step 6: Final answer
    x = 720,107.68

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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.