Home / 1,690,168.42-2,332,428.60-915,820.39

Finding the Fourth Proportional to 1,690,168.42, 2,332,428.60 and 915,820.39

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Solution

The fourth proportional to 1,690,168.42, 2,332,428.60 and 915,820.39 is: 1,263,830.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,168.42 : 2,332,428.60 = 915,820.39 : x
  2. Step 2: Convert to fraction form
    1,690,168.42/2,332,428.60 = 915,820.39/x
  3. Step 3: Cross multiply
    1,690,168.42x = 2,332,428.60 × 915,820.39
  4. Step 4: Simplify right side
    1,690,168.42x = 2,136,085,673,095.09
  5. Step 5: Solve for x
    x = 2,136,085,673,095.09/1,690,168.42
  6. Step 6: Final answer
    x = 1,263,830.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.