Home / 813,746,774.57-1,220,620,161.85-239,318,102.57

Finding the Fourth Proportional to 813,746,774.57, 1,220,620,161.85 and 239,318,102.57

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Solution

The fourth proportional to 813,746,774.57, 1,220,620,161.85 and 239,318,102.57 is: 358,977,153.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,746,774.57 : 1,220,620,161.85 = 239,318,102.57 : x
  2. Step 2: Convert to fraction form
    813,746,774.57/1,220,620,161.85 = 239,318,102.57/x
  3. Step 3: Cross multiply
    813,746,774.57x = 1,220,620,161.85 × 239,318,102.57
  4. Step 4: Simplify right side
    813,746,774.57x = 292,116,501,085,926,912
  5. Step 5: Solve for x
    x = 292,116,501,085,926,912/813,746,774.57
  6. Step 6: Final answer
    x = 358,977,153.85

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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.