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Finding the Fourth Proportional to 578,430.40, 867,645.60 and 263,502.40

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Solution

The fourth proportional to 578,430.40, 867,645.60 and 263,502.40 is: 395,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,430.40 : 867,645.60 = 263,502.40 : x
  2. Step 2: Convert to fraction form
    578,430.40/867,645.60 = 263,502.40/x
  3. Step 3: Cross multiply
    578,430.40x = 867,645.60 × 263,502.40
  4. Step 4: Simplify right side
    578,430.40x = 228,626,697,949.44
  5. Step 5: Solve for x
    x = 228,626,697,949.44/578,430.40
  6. Step 6: Final answer
    x = 395,253.60

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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.