Home / 1,108,921,711-1,529,831,590.90-668,643,968.92

Finding the Fourth Proportional to 1,108,921,711, 1,529,831,590.90 and 668,643,968.92

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Solution

The fourth proportional to 1,108,921,711, 1,529,831,590.90 and 668,643,968.92 is: 922,439,029.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108,921,711 : 1,529,831,590.90 = 668,643,968.92 : x
  2. Step 2: Convert to fraction form
    1,108,921,711/1,529,831,590.90 = 668,643,968.92/x
  3. Step 3: Cross multiply
    1,108,921,711x = 1,529,831,590.90 × 668,643,968.92
  4. Step 4: Simplify right side
    1,108,921,711x = 1,022,912,666,718,573,696
  5. Step 5: Solve for x
    x = 1,022,912,666,718,573,696/1,108,921,711
  6. Step 6: Final answer
    x = 922,439,029.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.