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Finding the Fourth Proportional to 627,615.36, 866,088 and 359,291.52

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Solution

The fourth proportional to 627,615.36, 866,088 and 359,291.52 is: 495,810.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,615.36 : 866,088 = 359,291.52 : x
  2. Step 2: Convert to fraction form
    627,615.36/866,088 = 359,291.52/x
  3. Step 3: Cross multiply
    627,615.36x = 866,088 × 359,291.52
  4. Step 4: Simplify right side
    627,615.36x = 311,178,073,973.76
  5. Step 5: Solve for x
    x = 311,178,073,973.76/627,615.36
  6. Step 6: Final answer
    x = 495,810.16

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1.5x scale

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.