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Finding the Fourth Proportional to 691,640.32, 1,037,210.94 and 292,312

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Solution

The fourth proportional to 691,640.32, 1,037,210.94 and 292,312 is: 438,362.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,640.32 : 1,037,210.94 = 292,312 : x
  2. Step 2: Convert to fraction form
    691,640.32/1,037,210.94 = 292,312/x
  3. Step 3: Cross multiply
    691,640.32x = 1,037,210.94 × 292,312
  4. Step 4: Simplify right side
    691,640.32x = 303,189,204,293.28
  5. Step 5: Solve for x
    x = 303,189,204,293.28/691,640.32
  6. Step 6: Final answer
    x = 438,362.54

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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.