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Finding the Fourth Proportional to 627,485.32, 865,950.54 and 369,315.44

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Solution

The fourth proportional to 627,485.32, 865,950.54 and 369,315.44 is: 509,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,485.32 : 865,950.54 = 369,315.44 : x
  2. Step 2: Convert to fraction form
    627,485.32/865,950.54 = 369,315.44/x
  3. Step 3: Cross multiply
    627,485.32x = 865,950.54 × 369,315.44
  4. Step 4: Simplify right side
    627,485.32x = 319,808,904,698.34
  5. Step 5: Solve for x
    x = 319,808,904,698.34/627,485.32
  6. Step 6: Final answer
    x = 509,667.55

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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.