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Finding the Fourth Proportional to 890,662.88, 1,229,192.54 and 488,332.64

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Solution

The fourth proportional to 890,662.88, 1,229,192.54 and 488,332.64 is: 673,941.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,662.88 : 1,229,192.54 = 488,332.64 : x
  2. Step 2: Convert to fraction form
    890,662.88/1,229,192.54 = 488,332.64/x
  3. Step 3: Cross multiply
    890,662.88x = 1,229,192.54 × 488,332.64
  4. Step 4: Simplify right side
    890,662.88x = 600,254,829,538.88
  5. Step 5: Solve for x
    x = 600,254,829,538.88/890,662.88
  6. Step 6: Final answer
    x = 673,941.67

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.