Home / 1,239,115-1,858,218.34-429,290.24

Finding the Fourth Proportional to 1,239,115, 1,858,218.34 and 429,290.24

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Solution

The fourth proportional to 1,239,115, 1,858,218.34 and 429,290.24 is: 643,778.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,115 : 1,858,218.34 = 429,290.24 : x
  2. Step 2: Convert to fraction form
    1,239,115/1,858,218.34 = 429,290.24/x
  3. Step 3: Cross multiply
    1,239,115x = 1,858,218.34 × 429,290.24
  4. Step 4: Simplify right side
    1,239,115x = 797,714,997,151.00
  5. Step 5: Solve for x
    x = 797,714,997,151.00/1,239,115
  6. Step 6: Final answer
    x = 643,778.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.