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Finding the Fourth Proportional to 668,187.60, 1,002,281.40 and 384,752.40

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Solution

The fourth proportional to 668,187.60, 1,002,281.40 and 384,752.40 is: 577,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,187.60 : 1,002,281.40 = 384,752.40 : x
  2. Step 2: Convert to fraction form
    668,187.60/1,002,281.40 = 384,752.40/x
  3. Step 3: Cross multiply
    668,187.60x = 1,002,281.40 × 384,752.40
  4. Step 4: Simplify right side
    668,187.60x = 385,630,174,125.36
  5. Step 5: Solve for x
    x = 385,630,174,125.36/668,187.60
  6. Step 6: Final answer
    x = 577,128.60

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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.