Home / 1,125,258.81-1,688,178.21-405,571.78

Finding the Fourth Proportional to 1,125,258.81, 1,688,178.21 and 405,571.78

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Solution

The fourth proportional to 1,125,258.81, 1,688,178.21 and 405,571.78 is: 608,462.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,258.81 : 1,688,178.21 = 405,571.78 : x
  2. Step 2: Convert to fraction form
    1,125,258.81/1,688,178.21 = 405,571.78/x
  3. Step 3: Cross multiply
    1,125,258.81x = 1,688,178.21 × 405,571.78
  4. Step 4: Simplify right side
    1,125,258.81x = 684,677,441,586.91
  5. Step 5: Solve for x
    x = 684,677,441,586.91/1,125,258.81
  6. Step 6: Final answer
    x = 608,462.19

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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.