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Finding the Fourth Proportional to 789,781,719.60, 1,184,672,579.40 and 402,361,230.60

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Solution

The fourth proportional to 789,781,719.60, 1,184,672,579.40 and 402,361,230.60 is: 603,541,845.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,781,719.60 : 1,184,672,579.40 = 402,361,230.60 : x
  2. Step 2: Convert to fraction form
    789,781,719.60/1,184,672,579.40 = 402,361,230.60/x
  3. Step 3: Cross multiply
    789,781,719.60x = 1,184,672,579.40 × 402,361,230.60
  4. Step 4: Simplify right side
    789,781,719.60x = 476,666,316,905,460,288
  5. Step 5: Solve for x
    x = 476,666,316,905,460,288/789,781,719.60
  6. Step 6: Final answer
    x = 603,541,845.90

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1.5x scale

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.