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Finding the Fourth Proportional to 507,130.45, 699,886.97 and 280,775.95

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Solution

The fourth proportional to 507,130.45, 699,886.97 and 280,775.95 is: 387,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,130.45 : 699,886.97 = 280,775.95 : x
  2. Step 2: Convert to fraction form
    507,130.45/699,886.97 = 280,775.95/x
  3. Step 3: Cross multiply
    507,130.45x = 699,886.97 × 280,775.95
  4. Step 4: Simplify right side
    507,130.45x = 196,511,428,894.37
  5. Step 5: Solve for x
    x = 196,511,428,894.37/507,130.45
  6. Step 6: Final answer
    x = 387,496.80

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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.