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Finding the Fourth Proportional to 674,226.72, 930,394.32 and 402,601.12

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Solution

The fourth proportional to 674,226.72, 930,394.32 and 402,601.12 is: 555,566.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,226.72 : 930,394.32 = 402,601.12 : x
  2. Step 2: Convert to fraction form
    674,226.72/930,394.32 = 402,601.12/x
  3. Step 3: Cross multiply
    674,226.72x = 930,394.32 × 402,601.12
  4. Step 4: Simplify right side
    674,226.72x = 374,577,795,273.64
  5. Step 5: Solve for x
    x = 374,577,795,273.64/674,226.72
  6. Step 6: Final answer
    x = 555,566.52

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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.