Home / 456,215.40-685,244.70-440,548.20

Finding the Fourth Proportional to 456,215.40, 685,244.70 and 440,548.20

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Solution

The fourth proportional to 456,215.40, 685,244.70 and 440,548.20 is: 661,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,215.40 : 685,244.70 = 440,548.20 : x
  2. Step 2: Convert to fraction form
    456,215.40/685,244.70 = 440,548.20/x
  3. Step 3: Cross multiply
    456,215.40x = 685,244.70 × 440,548.20
  4. Step 4: Simplify right side
    456,215.40x = 301,883,319,144.54
  5. Step 5: Solve for x
    x = 301,883,319,144.54/456,215.40
  6. Step 6: Final answer
    x = 661,712.25

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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.