Home / 778,563.40-1,167,845.10-445,865.80

Finding the Fourth Proportional to 778,563.40, 1,167,845.10 and 445,865.80

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Solution

The fourth proportional to 778,563.40, 1,167,845.10 and 445,865.80 is: 668,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,563.40 : 1,167,845.10 = 445,865.80 : x
  2. Step 2: Convert to fraction form
    778,563.40/1,167,845.10 = 445,865.80/x
  3. Step 3: Cross multiply
    778,563.40x = 1,167,845.10 × 445,865.80
  4. Step 4: Simplify right side
    778,563.40x = 520,702,189,787.58
  5. Step 5: Solve for x
    x = 520,702,189,787.58/778,563.40
  6. Step 6: Final answer
    x = 668,798.70

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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.