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Finding the Fourth Proportional to 718,987.02, 992,025.18 and 439,513.62

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Solution

The fourth proportional to 718,987.02, 992,025.18 and 439,513.62 is: 606,420.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,987.02 : 992,025.18 = 439,513.62 : x
  2. Step 2: Convert to fraction form
    718,987.02/992,025.18 = 439,513.62/x
  3. Step 3: Cross multiply
    718,987.02x = 992,025.18 × 439,513.62
  4. Step 4: Simplify right side
    718,987.02x = 436,008,577,992.95
  5. Step 5: Solve for x
    x = 436,008,577,992.95/718,987.02
  6. Step 6: Final answer
    x = 606,420.65

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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.