Home / 1,239,654.34-1,860,477.81-640,790.98

Finding the Fourth Proportional to 1,239,654.34, 1,860,477.81 and 640,790.98

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Solution

The fourth proportional to 1,239,654.34, 1,860,477.81 and 640,790.98 is: 961,701.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,654.34 : 1,860,477.81 = 640,790.98 : x
  2. Step 2: Convert to fraction form
    1,239,654.34/1,860,477.81 = 640,790.98/x
  3. Step 3: Cross multiply
    1,239,654.34x = 1,860,477.81 × 640,790.98
  4. Step 4: Simplify right side
    1,239,654.34x = 1,192,177,399,138.15
  5. Step 5: Solve for x
    x = 1,192,177,399,138.15/1,239,654.34
  6. Step 6: Final answer
    x = 961,701.47

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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.