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Finding the Fourth Proportional to 696,307.12, 960,902.76 and 394,500.40

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Solution

The fourth proportional to 696,307.12, 960,902.76 and 394,500.40 is: 544,409.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,307.12 : 960,902.76 = 394,500.40 : x
  2. Step 2: Convert to fraction form
    696,307.12/960,902.76 = 394,500.40/x
  3. Step 3: Cross multiply
    696,307.12x = 960,902.76 × 394,500.40
  4. Step 4: Simplify right side
    696,307.12x = 379,076,523,181.10
  5. Step 5: Solve for x
    x = 379,076,523,181.10/696,307.12
  6. Step 6: Final answer
    x = 544,409.95

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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.