Home / 810,641.85-1,118,685.81-443,120.45

Finding the Fourth Proportional to 810,641.85, 1,118,685.81 and 443,120.45

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Solution

The fourth proportional to 810,641.85, 1,118,685.81 and 443,120.45 is: 611,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,641.85 : 1,118,685.81 = 443,120.45 : x
  2. Step 2: Convert to fraction form
    810,641.85/1,118,685.81 = 443,120.45/x
  3. Step 3: Cross multiply
    810,641.85x = 1,118,685.81 × 443,120.45
  4. Step 4: Simplify right side
    810,641.85x = 495,712,557,504.12
  5. Step 5: Solve for x
    x = 495,712,557,504.12/810,641.85
  6. Step 6: Final answer
    x = 611,506.25

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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.