Home / 578,420.80-867,631.20-508,436.80

Finding the Fourth Proportional to 578,420.80, 867,631.20 and 508,436.80

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Solution

The fourth proportional to 578,420.80, 867,631.20 and 508,436.80 is: 762,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,420.80 : 867,631.20 = 508,436.80 : x
  2. Step 2: Convert to fraction form
    578,420.80/867,631.20 = 508,436.80/x
  3. Step 3: Cross multiply
    578,420.80x = 867,631.20 × 508,436.80
  4. Step 4: Simplify right side
    578,420.80x = 441,135,630,908.16
  5. Step 5: Solve for x
    x = 441,135,630,908.16/578,420.80
  6. Step 6: Final answer
    x = 762,655.20

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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.