Home / 668,205.20-1,002,307.80-313,911.20

Finding the Fourth Proportional to 668,205.20, 1,002,307.80 and 313,911.20

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Solution

The fourth proportional to 668,205.20, 1,002,307.80 and 313,911.20 is: 470,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,205.20 : 1,002,307.80 = 313,911.20 : x
  2. Step 2: Convert to fraction form
    668,205.20/1,002,307.80 = 313,911.20/x
  3. Step 3: Cross multiply
    668,205.20x = 1,002,307.80 × 313,911.20
  4. Step 4: Simplify right side
    668,205.20x = 314,635,644,267.36
  5. Step 5: Solve for x
    x = 314,635,644,267.36/668,205.20
  6. Step 6: Final answer
    x = 470,866.80

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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.