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Finding the Fourth Proportional to 585,382.40, 807,825.60 and 317,110.40

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Solution

The fourth proportional to 585,382.40, 807,825.60 and 317,110.40 is: 437,611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,382.40 : 807,825.60 = 317,110.40 : x
  2. Step 2: Convert to fraction form
    585,382.40/807,825.60 = 317,110.40/x
  3. Step 3: Cross multiply
    585,382.40x = 807,825.60 × 317,110.40
  4. Step 4: Simplify right side
    585,382.40x = 256,169,899,146.24
  5. Step 5: Solve for x
    x = 256,169,899,146.24/585,382.40
  6. Step 6: Final answer
    x = 437,611.21

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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.