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Finding the Fourth Proportional to 624,216.40, 934,740.60 and 343,416.40

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Solution

The fourth proportional to 624,216.40, 934,740.60 and 343,416.40 is: 514,253.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,216.40 : 934,740.60 = 343,416.40 : x
  2. Step 2: Convert to fraction form
    624,216.40/934,740.60 = 343,416.40/x
  3. Step 3: Cross multiply
    624,216.40x = 934,740.60 × 343,416.40
  4. Step 4: Simplify right side
    624,216.40x = 321,005,251,785.84
  5. Step 5: Solve for x
    x = 321,005,251,785.84/624,216.40
  6. Step 6: Final answer
    x = 514,253.15

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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.