Home / 666,743.46-920,237.13-505,316.94

Finding the Fourth Proportional to 666,743.46, 920,237.13 and 505,316.94

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Solution

The fourth proportional to 666,743.46, 920,237.13 and 505,316.94 is: 697,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,743.46 : 920,237.13 = 505,316.94 : x
  2. Step 2: Convert to fraction form
    666,743.46/920,237.13 = 505,316.94/x
  3. Step 3: Cross multiply
    666,743.46x = 920,237.13 × 505,316.94
  4. Step 4: Simplify right side
    666,743.46x = 465,011,410,605.98
  5. Step 5: Solve for x
    x = 465,011,410,605.98/666,743.46
  6. Step 6: Final answer
    x = 697,436.78

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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.