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Finding the Fourth Proportional to 386,762.60, 581,699.10 and 346,327.40

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Solution

The fourth proportional to 386,762.60, 581,699.10 and 346,327.40 is: 520,883.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,762.60 : 581,699.10 = 346,327.40 : x
  2. Step 2: Convert to fraction form
    386,762.60/581,699.10 = 346,327.40/x
  3. Step 3: Cross multiply
    386,762.60x = 581,699.10 × 346,327.40
  4. Step 4: Simplify right side
    386,762.60x = 201,458,336,885.34
  5. Step 5: Solve for x
    x = 201,458,336,885.34/386,762.60
  6. Step 6: Final answer
    x = 520,883.71

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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.