Home / 414,079,521.20-621,119,281.80-318,528,033.20

Finding the Fourth Proportional to 414,079,521.20, 621,119,281.80 and 318,528,033.20

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Solution

The fourth proportional to 414,079,521.20, 621,119,281.80 and 318,528,033.20 is: 477,792,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,079,521.20 : 621,119,281.80 = 318,528,033.20 : x
  2. Step 2: Convert to fraction form
    414,079,521.20/621,119,281.80 = 318,528,033.20/x
  3. Step 3: Cross multiply
    414,079,521.20x = 621,119,281.80 × 318,528,033.20
  4. Step 4: Simplify right side
    414,079,521.20x = 197,843,903,214,350,528
  5. Step 5: Solve for x
    x = 197,843,903,214,350,528/414,079,521.20
  6. Step 6: Final answer
    x = 477,792,049.80

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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.