Home / 813,456,055.60-1,220,184,083.40-260,757,415.60

Finding the Fourth Proportional to 813,456,055.60, 1,220,184,083.40 and 260,757,415.60

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Solution

The fourth proportional to 813,456,055.60, 1,220,184,083.40 and 260,757,415.60 is: 391,136,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,456,055.60 : 1,220,184,083.40 = 260,757,415.60 : x
  2. Step 2: Convert to fraction form
    813,456,055.60/1,220,184,083.40 = 260,757,415.60/x
  3. Step 3: Cross multiply
    813,456,055.60x = 1,220,184,083.40 × 260,757,415.60
  4. Step 4: Simplify right side
    813,456,055.60x = 318,172,048,143,638,848
  5. Step 5: Solve for x
    x = 318,172,048,143,638,848/813,456,055.60
  6. Step 6: Final answer
    x = 391,136,123.40

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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.