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Finding the Fourth Proportional to 671,690.60, 1,006,223.70 and 404,657.90

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Solution

The fourth proportional to 671,690.60, 1,006,223.70 and 404,657.90 is: 606,196.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,690.60 : 1,006,223.70 = 404,657.90 : x
  2. Step 2: Convert to fraction form
    671,690.60/1,006,223.70 = 404,657.90/x
  3. Step 3: Cross multiply
    671,690.60x = 1,006,223.70 × 404,657.90
  4. Step 4: Simplify right side
    671,690.60x = 407,176,369,372.23
  5. Step 5: Solve for x
    x = 407,176,369,372.23/671,690.60
  6. Step 6: Final answer
    x = 606,196.32

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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.