Home / 839,105,999.10-1,258,658,998.65-665,643,656.70

Finding the Fourth Proportional to 839,105,999.10, 1,258,658,998.65 and 665,643,656.70

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Solution

The fourth proportional to 839,105,999.10, 1,258,658,998.65 and 665,643,656.70 is: 998,465,485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,105,999.10 : 1,258,658,998.65 = 665,643,656.70 : x
  2. Step 2: Convert to fraction form
    839,105,999.10/1,258,658,998.65 = 665,643,656.70/x
  3. Step 3: Cross multiply
    839,105,999.10x = 1,258,658,998.65 × 665,643,656.70
  4. Step 4: Simplify right side
    839,105,999.10x = 837,818,378,399,746,432
  5. Step 5: Solve for x
    x = 837,818,378,399,746,432/839,105,999.10
  6. Step 6: Final answer
    x = 998,465,485.05

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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.