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Finding the Fourth Proportional to 529,287.40, 793,931.10 and 485,741.80

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Solution

The fourth proportional to 529,287.40, 793,931.10 and 485,741.80 is: 728,612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,287.40 : 793,931.10 = 485,741.80 : x
  2. Step 2: Convert to fraction form
    529,287.40/793,931.10 = 485,741.80/x
  3. Step 3: Cross multiply
    529,287.40x = 793,931.10 × 485,741.80
  4. Step 4: Simplify right side
    529,287.40x = 385,645,521,589.98
  5. Step 5: Solve for x
    x = 385,645,521,589.98/529,287.40
  6. Step 6: Final answer
    x = 728,612.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.