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Finding the Fourth Proportional to 986,646.72, 1,361,633.76 and 556,770

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Solution

The fourth proportional to 986,646.72, 1,361,633.76 and 556,770 is: 768,377.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,646.72 : 1,361,633.76 = 556,770 : x
  2. Step 2: Convert to fraction form
    986,646.72/1,361,633.76 = 556,770/x
  3. Step 3: Cross multiply
    986,646.72x = 1,361,633.76 × 556,770
  4. Step 4: Simplify right side
    986,646.72x = 758,116,828,555.20
  5. Step 5: Solve for x
    x = 758,116,828,555.20/986,646.72
  6. Step 6: Final answer
    x = 768,377.18

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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.