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Finding the Fourth Proportional to 862,651,459.40, 1,293,977,189.10 and 862,651,459.40

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Solution

The fourth proportional to 862,651,459.40, 1,293,977,189.10 and 862,651,459.40 is: 1,293,977,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,651,459.40 : 1,293,977,189.10 = 862,651,459.40 : x
  2. Step 2: Convert to fraction form
    862,651,459.40/1,293,977,189.10 = 862,651,459.40/x
  3. Step 3: Cross multiply
    862,651,459.40x = 1,293,977,189.10 × 862,651,459.40
  4. Step 4: Simplify right side
    862,651,459.40x = 1,116,251,310,607,424,640
  5. Step 5: Solve for x
    x = 1,116,251,310,607,424,640/862,651,459.40
  6. Step 6: Final answer
    x = 1,293,977,189.10

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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.