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Finding the Fourth Proportional to 448,784.60, 619,380.32 and 257,834.90

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Solution

The fourth proportional to 448,784.60, 619,380.32 and 257,834.90 is: 355,845.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,784.60 : 619,380.32 = 257,834.90 : x
  2. Step 2: Convert to fraction form
    448,784.60/619,380.32 = 257,834.90/x
  3. Step 3: Cross multiply
    448,784.60x = 619,380.32 × 257,834.90
  4. Step 4: Simplify right side
    448,784.60x = 159,697,862,869.17
  5. Step 5: Solve for x
    x = 159,697,862,869.17/448,784.60
  6. Step 6: Final answer
    x = 355,845.24

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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.