Home / 989,611,512.96-1,365,500,029.68-571,962,689.76

Finding the Fourth Proportional to 989,611,512.96, 1,365,500,029.68 and 571,962,689.76

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Solution

The fourth proportional to 989,611,512.96, 1,365,500,029.68 and 571,962,689.76 is: 789,213,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,611,512.96 : 1,365,500,029.68 = 571,962,689.76 : x
  2. Step 2: Convert to fraction form
    989,611,512.96/1,365,500,029.68 = 571,962,689.76/x
  3. Step 3: Cross multiply
    989,611,512.96x = 1,365,500,029.68 × 571,962,689.76
  4. Step 4: Simplify right side
    989,611,512.96x = 781,015,069,843,132,672
  5. Step 5: Solve for x
    x = 781,015,069,843,132,672/989,611,512.96
  6. Step 6: Final answer
    x = 789,213,807.25

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1.5x scale

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.