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Finding the Fourth Proportional to 668,148.12, 1,000,887.12 and 401,762.88

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Solution

The fourth proportional to 668,148.12, 1,000,887.12 and 401,762.88 is: 601,841.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,148.12 : 1,000,887.12 = 401,762.88 : x
  2. Step 2: Convert to fraction form
    668,148.12/1,000,887.12 = 401,762.88/x
  3. Step 3: Cross multiply
    668,148.12x = 1,000,887.12 × 401,762.88
  4. Step 4: Simplify right side
    668,148.12x = 402,119,291,886.11
  5. Step 5: Solve for x
    x = 402,119,291,886.11/668,148.12
  6. Step 6: Final answer
    x = 601,841.54

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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.