Home / 692,110.80-1,039,721.40-665,672.40

Finding the Fourth Proportional to 692,110.80, 1,039,721.40 and 665,672.40

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Solution

The fourth proportional to 692,110.80, 1,039,721.40 and 665,672.40 is: 1,000,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,110.80 : 1,039,721.40 = 665,672.40 : x
  2. Step 2: Convert to fraction form
    692,110.80/1,039,721.40 = 665,672.40/x
  3. Step 3: Cross multiply
    692,110.80x = 1,039,721.40 × 665,672.40
  4. Step 4: Simplify right side
    692,110.80x = 692,113,839,669.36
  5. Step 5: Solve for x
    x = 692,113,839,669.36/692,110.80
  6. Step 6: Final answer
    x = 1,000,004.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.