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Finding the Fourth Proportional to 519,055.20, 778,582.80 and 294,328.80

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Solution

The fourth proportional to 519,055.20, 778,582.80 and 294,328.80 is: 441,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,055.20 : 778,582.80 = 294,328.80 : x
  2. Step 2: Convert to fraction form
    519,055.20/778,582.80 = 294,328.80/x
  3. Step 3: Cross multiply
    519,055.20x = 778,582.80 × 294,328.80
  4. Step 4: Simplify right side
    519,055.20x = 229,159,341,224.64
  5. Step 5: Solve for x
    x = 229,159,341,224.64/519,055.20
  6. Step 6: Final answer
    x = 441,493.20

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Double scale
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Similar ratio
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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.