Home / 635,763.12-877,583.30-420,972.36

Finding the Fourth Proportional to 635,763.12, 877,583.30 and 420,972.36

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Solution

The fourth proportional to 635,763.12, 877,583.30 and 420,972.36 is: 581,094.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,763.12 : 877,583.30 = 420,972.36 : x
  2. Step 2: Convert to fraction form
    635,763.12/877,583.30 = 420,972.36/x
  3. Step 3: Cross multiply
    635,763.12x = 877,583.30 × 420,972.36
  4. Step 4: Simplify right side
    635,763.12x = 369,438,310,792.73
  5. Step 5: Solve for x
    x = 369,438,310,792.73/635,763.12
  6. Step 6: Final answer
    x = 581,094.28

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1.5x scale

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.