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Finding the Fourth Proportional to 666,021.30, 919,529.66 and 462,000.86

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Solution

The fourth proportional to 666,021.30, 919,529.66 and 462,000.86 is: 637,852.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,021.30 : 919,529.66 = 462,000.86 : x
  2. Step 2: Convert to fraction form
    666,021.30/919,529.66 = 462,000.86/x
  3. Step 3: Cross multiply
    666,021.30x = 919,529.66 × 462,000.86
  4. Step 4: Simplify right side
    666,021.30x = 424,823,490,272.86
  5. Step 5: Solve for x
    x = 424,823,490,272.86/666,021.30
  6. Step 6: Final answer
    x = 637,852.71

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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.