Home / 385,812.20-578,631.90-253,620.20

Finding the Fourth Proportional to 385,812.20, 578,631.90 and 253,620.20

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Solution

The fourth proportional to 385,812.20, 578,631.90 and 253,620.20 is: 380,373.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,812.20 : 578,631.90 = 253,620.20 : x
  2. Step 2: Convert to fraction form
    385,812.20/578,631.90 = 253,620.20/x
  3. Step 3: Cross multiply
    385,812.20x = 578,631.90 × 253,620.20
  4. Step 4: Simplify right side
    385,812.20x = 146,752,738,204.38
  5. Step 5: Solve for x
    x = 146,752,738,204.38/385,812.20
  6. Step 6: Final answer
    x = 380,373.50

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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.