Home / 405,121.40-607,682.10-124,638.20

Finding the Fourth Proportional to 405,121.40, 607,682.10 and 124,638.20

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Solution

The fourth proportional to 405,121.40, 607,682.10 and 124,638.20 is: 186,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,121.40 : 607,682.10 = 124,638.20 : x
  2. Step 2: Convert to fraction form
    405,121.40/607,682.10 = 124,638.20/x
  3. Step 3: Cross multiply
    405,121.40x = 607,682.10 × 124,638.20
  4. Step 4: Simplify right side
    405,121.40x = 75,740,403,116.22
  5. Step 5: Solve for x
    x = 75,740,403,116.22/405,121.40
  6. Step 6: Final answer
    x = 186,957.30

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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.