Home / 385,816.20-578,637.90-253,624.20

Finding the Fourth Proportional to 385,816.20, 578,637.90 and 253,624.20

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Solution

The fourth proportional to 385,816.20, 578,637.90 and 253,624.20 is: 380,379.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,816.20 : 578,637.90 = 253,624.20 : x
  2. Step 2: Convert to fraction form
    385,816.20/578,637.90 = 253,624.20/x
  3. Step 3: Cross multiply
    385,816.20x = 578,637.90 × 253,624.20
  4. Step 4: Simplify right side
    385,816.20x = 146,756,574,477.18
  5. Step 5: Solve for x
    x = 146,756,574,477.18/385,816.20
  6. Step 6: Final answer
    x = 380,379.50

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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.