Home / 1,553,135.72-2,142,908.80-908,714.28

Finding the Fourth Proportional to 1,553,135.72, 2,142,908.80 and 908,714.28

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Solution

The fourth proportional to 1,553,135.72, 2,142,908.80 and 908,714.28 is: 1,253,780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553,135.72 : 2,142,908.80 = 908,714.28 : x
  2. Step 2: Convert to fraction form
    1,553,135.72/2,142,908.80 = 908,714.28/x
  3. Step 3: Cross multiply
    1,553,135.72x = 2,142,908.80 × 908,714.28
  4. Step 4: Simplify right side
    1,553,135.72x = 1,947,291,827,297.66
  5. Step 5: Solve for x
    x = 1,947,291,827,297.66/1,553,135.72
  6. Step 6: Final answer
    x = 1,253,780.85

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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.