Home / 1,129,558.02-1,558,406.16-645,780.66

Finding the Fourth Proportional to 1,129,558.02, 1,558,406.16 and 645,780.66

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Solution

The fourth proportional to 1,129,558.02, 1,558,406.16 and 645,780.66 is: 890,957.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,558.02 : 1,558,406.16 = 645,780.66 : x
  2. Step 2: Convert to fraction form
    1,129,558.02/1,558,406.16 = 645,780.66/x
  3. Step 3: Cross multiply
    1,129,558.02x = 1,558,406.16 × 645,780.66
  4. Step 4: Simplify right side
    1,129,558.02x = 1,006,388,558,552.87
  5. Step 5: Solve for x
    x = 1,006,388,558,552.87/1,129,558.02
  6. Step 6: Final answer
    x = 890,957.83

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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.