Home / 440,064,397.80-660,096,596.70-390,321,520.20

Finding the Fourth Proportional to 440,064,397.80, 660,096,596.70 and 390,321,520.20

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Solution

The fourth proportional to 440,064,397.80, 660,096,596.70 and 390,321,520.20 is: 585,482,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,064,397.80 : 660,096,596.70 = 390,321,520.20 : x
  2. Step 2: Convert to fraction form
    440,064,397.80/660,096,596.70 = 390,321,520.20/x
  3. Step 3: Cross multiply
    440,064,397.80x = 660,096,596.70 × 390,321,520.20
  4. Step 4: Simplify right side
    440,064,397.80x = 257,649,907,102,790,304
  5. Step 5: Solve for x
    x = 257,649,907,102,790,304/440,064,397.80
  6. Step 6: Final answer
    x = 585,482,280.30

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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.