Home / 1,119,792.60-1,679,688.90-920,338.20

Finding the Fourth Proportional to 1,119,792.60, 1,679,688.90 and 920,338.20

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Solution

The fourth proportional to 1,119,792.60, 1,679,688.90 and 920,338.20 is: 1,380,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,792.60 : 1,679,688.90 = 920,338.20 : x
  2. Step 2: Convert to fraction form
    1,119,792.60/1,679,688.90 = 920,338.20/x
  3. Step 3: Cross multiply
    1,119,792.60x = 1,679,688.90 × 920,338.20
  4. Step 4: Simplify right side
    1,119,792.60x = 1,545,881,858,785.98
  5. Step 5: Solve for x
    x = 1,545,881,858,785.98/1,119,792.60
  6. Step 6: Final answer
    x = 1,380,507.30

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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.