Home / 1,125,505.18-1,687,223.30-405,670.74

Finding the Fourth Proportional to 1,125,505.18, 1,687,223.30 and 405,670.74

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Solution

The fourth proportional to 1,125,505.18, 1,687,223.30 and 405,670.74 is: 608,133.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,505.18 : 1,687,223.30 = 405,670.74 : x
  2. Step 2: Convert to fraction form
    1,125,505.18/1,687,223.30 = 405,670.74/x
  3. Step 3: Cross multiply
    1,125,505.18x = 1,687,223.30 × 405,670.74
  4. Step 4: Simplify right side
    1,125,505.18x = 684,457,121,616.57
  5. Step 5: Solve for x
    x = 684,457,121,616.57/1,125,505.18
  6. Step 6: Final answer
    x = 608,133.25

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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.