Home / 1,209,613.59-1,813,230.81-578,379.78

Finding the Fourth Proportional to 1,209,613.59, 1,813,230.81 and 578,379.78

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Solution

The fourth proportional to 1,209,613.59, 1,813,230.81 and 578,379.78 is: 867,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,613.59 : 1,813,230.81 = 578,379.78 : x
  2. Step 2: Convert to fraction form
    1,209,613.59/1,813,230.81 = 578,379.78/x
  3. Step 3: Cross multiply
    1,209,613.59x = 1,813,230.81 × 578,379.78
  4. Step 4: Simplify right side
    1,209,613.59x = 1,048,736,036,977.02
  5. Step 5: Solve for x
    x = 1,048,736,036,977.02/1,209,613.59
  6. Step 6: Final answer
    x = 867,000.87

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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.