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Finding the Fourth Proportional to 601,604.34, 830,591.49 and 387,117.15

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Solution

The fourth proportional to 601,604.34, 830,591.49 and 387,117.15 is: 534,464.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    601,604.34 : 830,591.49 = 387,117.15 : x
  2. Step 2: Convert to fraction form
    601,604.34/830,591.49 = 387,117.15/x
  3. Step 3: Cross multiply
    601,604.34x = 830,591.49 × 387,117.15
  4. Step 4: Simplify right side
    601,604.34x = 321,536,210,423.05
  5. Step 5: Solve for x
    x = 321,536,210,423.05/601,604.34
  6. Step 6: Final answer
    x = 534,464.58

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Double scale
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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.