Home / 900,400.64-1,242,414.96-518,353.60

Finding the Fourth Proportional to 900,400.64, 1,242,414.96 and 518,353.60

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Solution

The fourth proportional to 900,400.64, 1,242,414.96 and 518,353.60 is: 715,248.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,400.64 : 1,242,414.96 = 518,353.60 : x
  2. Step 2: Convert to fraction form
    900,400.64/1,242,414.96 = 518,353.60/x
  3. Step 3: Cross multiply
    900,400.64x = 1,242,414.96 × 518,353.60
  4. Step 4: Simplify right side
    900,400.64x = 644,010,267,209.86
  5. Step 5: Solve for x
    x = 644,010,267,209.86/900,400.64
  6. Step 6: Final answer
    x = 715,248.57

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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.