Home / 1,129,000.84-1,558,020.42-638,961.40

Finding the Fourth Proportional to 1,129,000.84, 1,558,020.42 and 638,961.40

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Solution

The fourth proportional to 1,129,000.84, 1,558,020.42 and 638,961.40 is: 881,766.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,000.84 : 1,558,020.42 = 638,961.40 : x
  2. Step 2: Convert to fraction form
    1,129,000.84/1,558,020.42 = 638,961.40/x
  3. Step 3: Cross multiply
    1,129,000.84x = 1,558,020.42 × 638,961.40
  4. Step 4: Simplify right side
    1,129,000.84x = 995,514,908,791.79
  5. Step 5: Solve for x
    x = 995,514,908,791.79/1,129,000.84
  6. Step 6: Final answer
    x = 881,766.31

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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.