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Finding the Fourth Proportional to 702,840.72, 969,916.08 and 380,544.15

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Solution

The fourth proportional to 702,840.72, 969,916.08 and 380,544.15 is: 525,148.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,840.72 : 969,916.08 = 380,544.15 : x
  2. Step 2: Convert to fraction form
    702,840.72/969,916.08 = 380,544.15/x
  3. Step 3: Cross multiply
    702,840.72x = 969,916.08 × 380,544.15
  4. Step 4: Simplify right side
    702,840.72x = 369,095,890,234.93
  5. Step 5: Solve for x
    x = 369,095,890,234.93/702,840.72
  6. Step 6: Final answer
    x = 525,148.70

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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.