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Finding the Fourth Proportional to 647,420.08, 893,487 and 375,580.84

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Solution

The fourth proportional to 647,420.08, 893,487 and 375,580.84 is: 518,328.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,420.08 : 893,487 = 375,580.84 : x
  2. Step 2: Convert to fraction form
    647,420.08/893,487 = 375,580.84/x
  3. Step 3: Cross multiply
    647,420.08x = 893,487 × 375,580.84
  4. Step 4: Simplify right side
    647,420.08x = 335,576,597,989.08
  5. Step 5: Solve for x
    x = 335,576,597,989.08/647,420.08
  6. Step 6: Final answer
    x = 518,328.99

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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.