Home / 1,078,565.80-1,618,431.90-479,619.40

Finding the Fourth Proportional to 1,078,565.80, 1,618,431.90 and 479,619.40

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Solution

The fourth proportional to 1,078,565.80, 1,618,431.90 and 479,619.40 is: 719,688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,565.80 : 1,618,431.90 = 479,619.40 : x
  2. Step 2: Convert to fraction form
    1,078,565.80/1,618,431.90 = 479,619.40/x
  3. Step 3: Cross multiply
    1,078,565.80x = 1,618,431.90 × 479,619.40
  4. Step 4: Simplify right side
    1,078,565.80x = 776,231,336,818.86
  5. Step 5: Solve for x
    x = 776,231,336,818.86/1,078,565.80
  6. Step 6: Final answer
    x = 719,688.44

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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.