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Finding the Fourth Proportional to 647,140.41, 893,056.77 and 375,369.21

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Solution

The fourth proportional to 647,140.41, 893,056.77 and 375,369.21 is: 518,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,140.41 : 893,056.77 = 375,369.21 : x
  2. Step 2: Convert to fraction form
    647,140.41/893,056.77 = 375,369.21/x
  3. Step 3: Cross multiply
    647,140.41x = 893,056.77 × 375,369.21
  4. Step 4: Simplify right side
    647,140.41x = 335,226,014,240.05
  5. Step 5: Solve for x
    x = 335,226,014,240.05/647,140.41
  6. Step 6: Final answer
    x = 518,011.25

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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.