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Finding the Fourth Proportional to 455,602.40, 683,403.60 and 349,314.20

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Solution

The fourth proportional to 455,602.40, 683,403.60 and 349,314.20 is: 523,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,602.40 : 683,403.60 = 349,314.20 : x
  2. Step 2: Convert to fraction form
    455,602.40/683,403.60 = 349,314.20/x
  3. Step 3: Cross multiply
    455,602.40x = 683,403.60 × 349,314.20
  4. Step 4: Simplify right side
    455,602.40x = 238,722,581,811.12
  5. Step 5: Solve for x
    x = 238,722,581,811.12/455,602.40
  6. Step 6: Final answer
    x = 523,971.30

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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.