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Finding the Fourth Proportional to 507,908.30, 700,921.38 and 278,486.54

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Solution

The fourth proportional to 507,908.30, 700,921.38 and 278,486.54 is: 384,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,908.30 : 700,921.38 = 278,486.54 : x
  2. Step 2: Convert to fraction form
    507,908.30/700,921.38 = 278,486.54/x
  3. Step 3: Cross multiply
    507,908.30x = 700,921.38 × 278,486.54
  4. Step 4: Simplify right side
    507,908.30x = 195,197,169,928.23
  5. Step 5: Solve for x
    x = 195,197,169,928.23/507,908.30
  6. Step 6: Final answer
    x = 384,315.77

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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.