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Finding the Fourth Proportional to 647,447.20, 893,480.88 and 360,985.12

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Solution

The fourth proportional to 647,447.20, 893,480.88 and 360,985.12 is: 498,161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,447.20 : 893,480.88 = 360,985.12 : x
  2. Step 2: Convert to fraction form
    647,447.20/893,480.88 = 360,985.12/x
  3. Step 3: Cross multiply
    647,447.20x = 893,480.88 × 360,985.12
  4. Step 4: Simplify right side
    647,447.20x = 322,533,302,684.51
  5. Step 5: Solve for x
    x = 322,533,302,684.51/647,447.20
  6. Step 6: Final answer
    x = 498,161.55

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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.