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Finding the Fourth Proportional to 612,966.69, 919,440.80 and 275,769.21

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Solution

The fourth proportional to 612,966.69, 919,440.80 and 275,769.21 is: 413,649.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,966.69 : 919,440.80 = 275,769.21 : x
  2. Step 2: Convert to fraction form
    612,966.69/919,440.80 = 275,769.21/x
  3. Step 3: Cross multiply
    612,966.69x = 919,440.80 × 275,769.21
  4. Step 4: Simplify right side
    612,966.69x = 253,553,461,678.92
  5. Step 5: Solve for x
    x = 253,553,461,678.92/612,966.69
  6. Step 6: Final answer
    x = 413,649.66

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1.5x scale

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.