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Finding the Fourth Proportional to 909,431.65, 1,363,598 and 362,408.20

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Solution

The fourth proportional to 909,431.65, 1,363,598 and 362,408.20 is: 543,393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,431.65 : 1,363,598 = 362,408.20 : x
  2. Step 2: Convert to fraction form
    909,431.65/1,363,598 = 362,408.20/x
  3. Step 3: Cross multiply
    909,431.65x = 1,363,598 × 362,408.20
  4. Step 4: Simplify right side
    909,431.65x = 494,179,096,703.60
  5. Step 5: Solve for x
    x = 494,179,096,703.60/909,431.65
  6. Step 6: Final answer
    x = 543,393.33

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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.