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Finding the Fourth Proportional to 818,995,280.55, 1,228,492,920.83 and 818,995,280.55

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Solution

The fourth proportional to 818,995,280.55, 1,228,492,920.83 and 818,995,280.55 is: 1,228,492,920.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,995,280.55 : 1,228,492,920.83 = 818,995,280.55 : x
  2. Step 2: Convert to fraction form
    818,995,280.55/1,228,492,920.83 = 818,995,280.55/x
  3. Step 3: Cross multiply
    818,995,280.55x = 1,228,492,920.83 × 818,995,280.55
  4. Step 4: Simplify right side
    818,995,280.55x = 1,006,129,904,344,759,808
  5. Step 5: Solve for x
    x = 1,006,129,904,344,759,808/818,995,280.55
  6. Step 6: Final answer
    x = 1,228,492,920.83

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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.