Home / 402,541.20-603,811.80-372,128.40

Finding the Fourth Proportional to 402,541.20, 603,811.80 and 372,128.40

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Solution

The fourth proportional to 402,541.20, 603,811.80 and 372,128.40 is: 558,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,541.20 : 603,811.80 = 372,128.40 : x
  2. Step 2: Convert to fraction form
    402,541.20/603,811.80 = 372,128.40/x
  3. Step 3: Cross multiply
    402,541.20x = 603,811.80 × 372,128.40
  4. Step 4: Simplify right side
    402,541.20x = 224,695,519,035.12
  5. Step 5: Solve for x
    x = 224,695,519,035.12/402,541.20
  6. Step 6: Final answer
    x = 558,192.60

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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.