Home / 631,215.60-946,828.20-210,490.80

Finding the Fourth Proportional to 631,215.60, 946,828.20 and 210,490.80

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Solution

The fourth proportional to 631,215.60, 946,828.20 and 210,490.80 is: 315,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,215.60 : 946,828.20 = 210,490.80 : x
  2. Step 2: Convert to fraction form
    631,215.60/946,828.20 = 210,490.80/x
  3. Step 3: Cross multiply
    631,215.60x = 946,828.20 × 210,490.80
  4. Step 4: Simplify right side
    631,215.60x = 199,298,625,280.56
  5. Step 5: Solve for x
    x = 199,298,625,280.56/631,215.60
  6. Step 6: Final answer
    x = 315,737.80

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1.5x scale

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.