Home / 1,051,712.80-1,451,116.53-638,240.21

Finding the Fourth Proportional to 1,051,712.80, 1,451,116.53 and 638,240.21

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Solution

The fourth proportional to 1,051,712.80, 1,451,116.53 and 638,240.21 is: 880,621.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051,712.80 : 1,451,116.53 = 638,240.21 : x
  2. Step 2: Convert to fraction form
    1,051,712.80/1,451,116.53 = 638,240.21/x
  3. Step 3: Cross multiply
    1,051,712.80x = 1,451,116.53 × 638,240.21
  4. Step 4: Simplify right side
    1,051,712.80x = 926,160,915,927.05
  5. Step 5: Solve for x
    x = 926,160,915,927.05/1,051,712.80
  6. Step 6: Final answer
    x = 880,621.52

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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.