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Finding the Fourth Proportional to 874,843, 1,207,283.40 and 472,435

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Solution

The fourth proportional to 874,843, 1,207,283.40 and 472,435 is: 651,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,843 : 1,207,283.40 = 472,435 : x
  2. Step 2: Convert to fraction form
    874,843/1,207,283.40 = 472,435/x
  3. Step 3: Cross multiply
    874,843x = 1,207,283.40 × 472,435
  4. Step 4: Simplify right side
    874,843x = 570,362,933,079
  5. Step 5: Solve for x
    x = 570,362,933,079/874,843
  6. Step 6: Final answer
    x = 651,960.33

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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.