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Finding the Fourth Proportional to 591,431.36, 891,137.36 and 488,553.92

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Solution

The fourth proportional to 591,431.36, 891,137.36 and 488,553.92 is: 736,127.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,431.36 : 891,137.36 = 488,553.92 : x
  2. Step 2: Convert to fraction form
    591,431.36/891,137.36 = 488,553.92/x
  3. Step 3: Cross multiply
    591,431.36x = 891,137.36 × 488,553.92
  4. Step 4: Simplify right side
    591,431.36x = 435,368,650,486.45
  5. Step 5: Solve for x
    x = 435,368,650,486.45/591,431.36
  6. Step 6: Final answer
    x = 736,127.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.