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Finding the Fourth Proportional to 615,091.80, 923,328.90 and 475,469.40

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Solution

The fourth proportional to 615,091.80, 923,328.90 and 475,469.40 is: 713,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,091.80 : 923,328.90 = 475,469.40 : x
  2. Step 2: Convert to fraction form
    615,091.80/923,328.90 = 475,469.40/x
  3. Step 3: Cross multiply
    615,091.80x = 923,328.90 × 475,469.40
  4. Step 4: Simplify right side
    615,091.80x = 439,014,638,085.66
  5. Step 5: Solve for x
    x = 439,014,638,085.66/615,091.80
  6. Step 6: Final answer
    x = 713,738.40

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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.