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Finding the Fourth Proportional to 611,631,619.10, 917,447,428.65 and 611,631,619.10

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Solution

The fourth proportional to 611,631,619.10, 917,447,428.65 and 611,631,619.10 is: 917,447,428.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,631,619.10 : 917,447,428.65 = 611,631,619.10 : x
  2. Step 2: Convert to fraction form
    611,631,619.10/917,447,428.65 = 611,631,619.10/x
  3. Step 3: Cross multiply
    611,631,619.10x = 917,447,428.65 × 611,631,619.10
  4. Step 4: Simplify right side
    611,631,619.10x = 561,139,856,224,331,264
  5. Step 5: Solve for x
    x = 561,139,856,224,331,264/611,631,619.10
  6. Step 6: Final answer
    x = 917,447,428.65

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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.