Home / 262,440,012.80-393,660,019.20-258,613,637.60

Finding the Fourth Proportional to 262,440,012.80, 393,660,019.20 and 258,613,637.60

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Solution

The fourth proportional to 262,440,012.80, 393,660,019.20 and 258,613,637.60 is: 387,920,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,440,012.80 : 393,660,019.20 = 258,613,637.60 : x
  2. Step 2: Convert to fraction form
    262,440,012.80/393,660,019.20 = 258,613,637.60/x
  3. Step 3: Cross multiply
    262,440,012.80x = 393,660,019.20 × 258,613,637.60
  4. Step 4: Simplify right side
    262,440,012.80x = 101,805,849,542,997,840
  5. Step 5: Solve for x
    x = 101,805,849,542,997,840/262,440,012.80
  6. Step 6: Final answer
    x = 387,920,456.40

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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.