Home / 1,188,117-1,781,235.08-429,840.36

Finding the Fourth Proportional to 1,188,117, 1,781,235.08 and 429,840.36

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Solution

The fourth proportional to 1,188,117, 1,781,235.08 and 429,840.36 is: 644,420.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,117 : 1,781,235.08 = 429,840.36 : x
  2. Step 2: Convert to fraction form
    1,188,117/1,781,235.08 = 429,840.36/x
  3. Step 3: Cross multiply
    1,188,117x = 1,781,235.08 × 429,840.36
  4. Step 4: Simplify right side
    1,188,117x = 765,646,728,031.83
  5. Step 5: Solve for x
    x = 765,646,728,031.83/1,188,117
  6. Step 6: Final answer
    x = 644,420.31

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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.