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Finding the Fourth Proportional to 507,709.53, 700,639.08 and 278,274.20

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Solution

The fourth proportional to 507,709.53, 700,639.08 and 278,274.20 is: 384,018.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,709.53 : 700,639.08 = 278,274.20 : x
  2. Step 2: Convert to fraction form
    507,709.53/700,639.08 = 278,274.20/x
  3. Step 3: Cross multiply
    507,709.53x = 700,639.08 × 278,274.20
  4. Step 4: Simplify right side
    507,709.53x = 194,969,775,972.54
  5. Step 5: Solve for x
    x = 194,969,775,972.54/507,709.53
  6. Step 6: Final answer
    x = 384,018.35

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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.