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Finding the Fourth Proportional to 647,482.38, 893,540.12 and 357,102.77

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Solution

The fourth proportional to 647,482.38, 893,540.12 and 357,102.77 is: 492,809.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,482.38 : 893,540.12 = 357,102.77 : x
  2. Step 2: Convert to fraction form
    647,482.38/893,540.12 = 357,102.77/x
  3. Step 3: Cross multiply
    647,482.38x = 893,540.12 × 357,102.77
  4. Step 4: Simplify right side
    647,482.38x = 319,085,653,299.23
  5. Step 5: Solve for x
    x = 319,085,653,299.23/647,482.38
  6. Step 6: Final answer
    x = 492,809.79

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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.