Home / 1,369,570.56-1,890,612.75-818,480.74

Finding the Fourth Proportional to 1,369,570.56, 1,890,612.75 and 818,480.74

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Solution

The fourth proportional to 1,369,570.56, 1,890,612.75 and 818,480.74 is: 1,129,865.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369,570.56 : 1,890,612.75 = 818,480.74 : x
  2. Step 2: Convert to fraction form
    1,369,570.56/1,890,612.75 = 818,480.74/x
  3. Step 3: Cross multiply
    1,369,570.56x = 1,890,612.75 × 818,480.74
  4. Step 4: Simplify right side
    1,369,570.56x = 1,547,430,122,673.44
  5. Step 5: Solve for x
    x = 1,547,430,122,673.44/1,369,570.56
  6. Step 6: Final answer
    x = 1,129,865.21

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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.