Home / 1,125,470.40-1,687,680.16-405,717.32

Finding the Fourth Proportional to 1,125,470.40, 1,687,680.16 and 405,717.32

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Solution

The fourth proportional to 1,125,470.40, 1,687,680.16 and 405,717.32 is: 608,386.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,470.40 : 1,687,680.16 = 405,717.32 : x
  2. Step 2: Convert to fraction form
    1,125,470.40/1,687,680.16 = 405,717.32/x
  3. Step 3: Cross multiply
    1,125,470.40x = 1,687,680.16 × 405,717.32
  4. Step 4: Simplify right side
    1,125,470.40x = 684,721,071,532.37
  5. Step 5: Solve for x
    x = 684,721,071,532.37/1,125,470.40
  6. Step 6: Final answer
    x = 608,386.57

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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.