Home / 857,520,012.10-1,286,280,018.15-531,002,661.70

Finding the Fourth Proportional to 857,520,012.10, 1,286,280,018.15 and 531,002,661.70

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Solution

The fourth proportional to 857,520,012.10, 1,286,280,018.15 and 531,002,661.70 is: 796,503,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,520,012.10 : 1,286,280,018.15 = 531,002,661.70 : x
  2. Step 2: Convert to fraction form
    857,520,012.10/1,286,280,018.15 = 531,002,661.70/x
  3. Step 3: Cross multiply
    857,520,012.10x = 1,286,280,018.15 × 531,002,661.70
  4. Step 4: Simplify right side
    857,520,012.10x = 683,018,113,329,174,400
  5. Step 5: Solve for x
    x = 683,018,113,329,174,400/857,520,012.10
  6. Step 6: Final answer
    x = 796,503,992.55

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Double scale
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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.