Home / 1,438,897.72-1,985,714.96-818,668.70

Finding the Fourth Proportional to 1,438,897.72, 1,985,714.96 and 818,668.70

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Solution

The fourth proportional to 1,438,897.72, 1,985,714.96 and 818,668.70 is: 1,129,783.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,897.72 : 1,985,714.96 = 818,668.70 : x
  2. Step 2: Convert to fraction form
    1,438,897.72/1,985,714.96 = 818,668.70/x
  3. Step 3: Cross multiply
    1,438,897.72x = 1,985,714.96 × 818,668.70
  4. Step 4: Simplify right side
    1,438,897.72x = 1,625,642,684,873.75
  5. Step 5: Solve for x
    x = 1,625,642,684,873.75/1,438,897.72
  6. Step 6: Final answer
    x = 1,129,783.35

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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.