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Finding the Fourth Proportional to 838,928, 1,157,808.12 and 476,449.76

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Solution

The fourth proportional to 838,928, 1,157,808.12 and 476,449.76 is: 657,550.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,928 : 1,157,808.12 = 476,449.76 : x
  2. Step 2: Convert to fraction form
    838,928/1,157,808.12 = 476,449.76/x
  3. Step 3: Cross multiply
    838,928x = 1,157,808.12 × 476,449.76
  4. Step 4: Simplify right side
    838,928x = 551,637,400,900.05
  5. Step 5: Solve for x
    x = 551,637,400,900.05/838,928
  6. Step 6: Final answer
    x = 657,550.35

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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.