Home / 1,385,288.72-2,078,140.80-486,572.06

Finding the Fourth Proportional to 1,385,288.72, 2,078,140.80 and 486,572.06

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Solution

The fourth proportional to 1,385,288.72, 2,078,140.80 and 486,572.06 is: 729,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,288.72 : 2,078,140.80 = 486,572.06 : x
  2. Step 2: Convert to fraction form
    1,385,288.72/2,078,140.80 = 486,572.06/x
  3. Step 3: Cross multiply
    1,385,288.72x = 2,078,140.80 × 486,572.06
  4. Step 4: Simplify right side
    1,385,288.72x = 1,011,165,250,026.05
  5. Step 5: Solve for x
    x = 1,011,165,250,026.05/1,385,288.72
  6. Step 6: Final answer
    x = 729,931.05

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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.