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Finding the Fourth Proportional to 514,589.64, 710,480.28 and 321,291.64

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Solution

The fourth proportional to 514,589.64, 710,480.28 and 321,291.64 is: 443,598.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,589.64 : 710,480.28 = 321,291.64 : x
  2. Step 2: Convert to fraction form
    514,589.64/710,480.28 = 321,291.64/x
  3. Step 3: Cross multiply
    514,589.64x = 710,480.28 × 321,291.64
  4. Step 4: Simplify right side
    514,589.64x = 228,271,374,348.86
  5. Step 5: Solve for x
    x = 228,271,374,348.86/514,589.64
  6. Step 6: Final answer
    x = 443,598.85

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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.