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Finding the Fourth Proportional to 638,567.36, 881,155.56 and 352,070.48

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Solution

The fourth proportional to 638,567.36, 881,155.56 and 352,070.48 is: 485,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,567.36 : 881,155.56 = 352,070.48 : x
  2. Step 2: Convert to fraction form
    638,567.36/881,155.56 = 352,070.48/x
  3. Step 3: Cross multiply
    638,567.36x = 881,155.56 × 352,070.48
  4. Step 4: Simplify right side
    638,567.36x = 310,228,860,963.87
  5. Step 5: Solve for x
    x = 310,228,860,963.87/638,567.36
  6. Step 6: Final answer
    x = 485,820.10

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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.