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Finding the Fourth Proportional to 605,029.10, 907,738.05 and 405,574.70

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Solution

The fourth proportional to 605,029.10, 907,738.05 and 405,574.70 is: 608,492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,029.10 : 907,738.05 = 405,574.70 : x
  2. Step 2: Convert to fraction form
    605,029.10/907,738.05 = 405,574.70/x
  3. Step 3: Cross multiply
    605,029.10x = 907,738.05 × 405,574.70
  4. Step 4: Simplify right side
    605,029.10x = 368,155,587,307.34
  5. Step 5: Solve for x
    x = 368,155,587,307.34/605,029.10
  6. Step 6: Final answer
    x = 608,492.36

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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.