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Finding the Fourth Proportional to 811,316,453.30, 1,216,974,679.95 and 811,316,453.30

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Solution

The fourth proportional to 811,316,453.30, 1,216,974,679.95 and 811,316,453.30 is: 1,216,974,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,316,453.30 : 1,216,974,679.95 = 811,316,453.30 : x
  2. Step 2: Convert to fraction form
    811,316,453.30/1,216,974,679.95 = 811,316,453.30/x
  3. Step 3: Cross multiply
    811,316,453.30x = 1,216,974,679.95 × 811,316,453.30
  4. Step 4: Simplify right side
    811,316,453.30x = 987,351,581,092,936,576
  5. Step 5: Solve for x
    x = 987,351,581,092,936,576/811,316,453.30
  6. Step 6: Final answer
    x = 1,216,974,679.95

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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.