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Finding the Fourth Proportional to 591,685.80, 887,528.70 and 339,743.40

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Solution

The fourth proportional to 591,685.80, 887,528.70 and 339,743.40 is: 509,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,685.80 : 887,528.70 = 339,743.40 : x
  2. Step 2: Convert to fraction form
    591,685.80/887,528.70 = 339,743.40/x
  3. Step 3: Cross multiply
    591,685.80x = 887,528.70 × 339,743.40
  4. Step 4: Simplify right side
    591,685.80x = 301,532,018,135.58
  5. Step 5: Solve for x
    x = 301,532,018,135.58/591,685.80
  6. Step 6: Final answer
    x = 509,615.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.