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Finding the Fourth Proportional to 747,953,999.10, 1,121,930,998.65 and 686,731,995.90

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Solution

The fourth proportional to 747,953,999.10, 1,121,930,998.65 and 686,731,995.90 is: 1,030,097,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,953,999.10 : 1,121,930,998.65 = 686,731,995.90 : x
  2. Step 2: Convert to fraction form
    747,953,999.10/1,121,930,998.65 = 686,731,995.90/x
  3. Step 3: Cross multiply
    747,953,999.10x = 1,121,930,998.65 × 686,731,995.90
  4. Step 4: Simplify right side
    747,953,999.10x = 770,465,913,964,994,688
  5. Step 5: Solve for x
    x = 770,465,913,964,994,688/747,953,999.10
  6. Step 6: Final answer
    x = 1,030,097,993.85

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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.