Home / 1,478,404.70-2,217,607.05-769,816.70

Finding the Fourth Proportional to 1,478,404.70, 2,217,607.05 and 769,816.70

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Solution

The fourth proportional to 1,478,404.70, 2,217,607.05 and 769,816.70 is: 1,154,725.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,404.70 : 2,217,607.05 = 769,816.70 : x
  2. Step 2: Convert to fraction form
    1,478,404.70/2,217,607.05 = 769,816.70/x
  3. Step 3: Cross multiply
    1,478,404.70x = 2,217,607.05 × 769,816.70
  4. Step 4: Simplify right side
    1,478,404.70x = 1,707,150,941,127.74
  5. Step 5: Solve for x
    x = 1,707,150,941,127.74/1,478,404.70
  6. Step 6: Final answer
    x = 1,154,725.05

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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.