Home / 1,538,775-2,306,916.70-640,888.81

Finding the Fourth Proportional to 1,538,775, 2,306,916.70 and 640,888.81

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Solution

The fourth proportional to 1,538,775, 2,306,916.70 and 640,888.81 is: 960,814.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,775 : 2,306,916.70 = 640,888.81 : x
  2. Step 2: Convert to fraction form
    1,538,775/2,306,916.70 = 640,888.81/x
  3. Step 3: Cross multiply
    1,538,775x = 2,306,916.70 × 640,888.81
  4. Step 4: Simplify right side
    1,538,775x = 1,478,477,091,262.61
  5. Step 5: Solve for x
    x = 1,478,477,091,262.61/1,538,775
  6. Step 6: Final answer
    x = 960,814.34

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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.