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Finding the Fourth Proportional to 624,235.40, 934,769.10 and 343,435.40

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Solution

The fourth proportional to 624,235.40, 934,769.10 and 343,435.40 is: 514,281.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,235.40 : 934,769.10 = 343,435.40 : x
  2. Step 2: Convert to fraction form
    624,235.40/934,769.10 = 343,435.40/x
  3. Step 3: Cross multiply
    624,235.40x = 934,769.10 × 343,435.40
  4. Step 4: Simplify right side
    624,235.40x = 321,032,799,766.14
  5. Step 5: Solve for x
    x = 321,032,799,766.14/624,235.40
  6. Step 6: Final answer
    x = 514,281.63

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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.