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Finding the Fourth Proportional to 664,800.76, 917,421.42 and 362,992.60

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Solution

The fourth proportional to 664,800.76, 917,421.42 and 362,992.60 is: 500,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,800.76 : 917,421.42 = 362,992.60 : x
  2. Step 2: Convert to fraction form
    664,800.76/917,421.42 = 362,992.60/x
  3. Step 3: Cross multiply
    664,800.76x = 917,421.42 × 362,992.60
  4. Step 4: Simplify right side
    664,800.76x = 333,017,186,541.49
  5. Step 5: Solve for x
    x = 333,017,186,541.49/664,800.76
  6. Step 6: Final answer
    x = 500,927.81

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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.