Home / 900,401.64-1,242,416.34-518,354.60

Finding the Fourth Proportional to 900,401.64, 1,242,416.34 and 518,354.60

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Solution

The fourth proportional to 900,401.64, 1,242,416.34 and 518,354.60 is: 715,249.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,401.64 : 1,242,416.34 = 518,354.60 : x
  2. Step 2: Convert to fraction form
    900,401.64/1,242,416.34 = 518,354.60/x
  3. Step 3: Cross multiply
    900,401.64x = 1,242,416.34 × 518,354.60
  4. Step 4: Simplify right side
    900,401.64x = 644,012,224,954.16
  5. Step 5: Solve for x
    x = 644,012,224,954.16/900,401.64
  6. Step 6: Final answer
    x = 715,249.95

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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.