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Finding the Fourth Proportional to 551,566.28, 760,499.24 and 398,359.64

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Solution

The fourth proportional to 551,566.28, 760,499.24 and 398,359.64 is: 549,258.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,566.28 : 760,499.24 = 398,359.64 : x
  2. Step 2: Convert to fraction form
    551,566.28/760,499.24 = 398,359.64/x
  3. Step 3: Cross multiply
    551,566.28x = 760,499.24 × 398,359.64
  4. Step 4: Simplify right side
    551,566.28x = 302,952,203,376.12
  5. Step 5: Solve for x
    x = 302,952,203,376.12/551,566.28
  6. Step 6: Final answer
    x = 549,258.02

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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.