Home / 778,557.96-1,074,411.54-420,861.96

Finding the Fourth Proportional to 778,557.96, 1,074,411.54 and 420,861.96

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Solution

The fourth proportional to 778,557.96, 1,074,411.54 and 420,861.96 is: 580,790.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,557.96 : 1,074,411.54 = 420,861.96 : x
  2. Step 2: Convert to fraction form
    778,557.96/1,074,411.54 = 420,861.96/x
  3. Step 3: Cross multiply
    778,557.96x = 1,074,411.54 × 420,861.96
  4. Step 4: Simplify right side
    778,557.96x = 452,178,946,571.02
  5. Step 5: Solve for x
    x = 452,178,946,571.02/778,557.96
  6. Step 6: Final answer
    x = 580,790.35

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Double scale
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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.