Home / 518,477,344.80-777,716,017.20-211,667,488.80

Finding the Fourth Proportional to 518,477,344.80, 777,716,017.20 and 211,667,488.80

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Solution

The fourth proportional to 518,477,344.80, 777,716,017.20 and 211,667,488.80 is: 317,501,233.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,477,344.80 : 777,716,017.20 = 211,667,488.80 : x
  2. Step 2: Convert to fraction form
    518,477,344.80/777,716,017.20 = 211,667,488.80/x
  3. Step 3: Cross multiply
    518,477,344.80x = 777,716,017.20 × 211,667,488.80
  4. Step 4: Simplify right side
    518,477,344.80x = 164,617,196,360,261,632
  5. Step 5: Solve for x
    x = 164,617,196,360,261,632/518,477,344.80
  6. Step 6: Final answer
    x = 317,501,233.20

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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.