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Finding the Fourth Proportional to 665,831.25, 918,850.37 and 364,025.25

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Solution

The fourth proportional to 665,831.25, 918,850.37 and 364,025.25 is: 502,356.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,831.25 : 918,850.37 = 364,025.25 : x
  2. Step 2: Convert to fraction form
    665,831.25/918,850.37 = 364,025.25/x
  3. Step 3: Cross multiply
    665,831.25x = 918,850.37 × 364,025.25
  4. Step 4: Simplify right side
    665,831.25x = 334,484,733,831.72
  5. Step 5: Solve for x
    x = 334,484,733,831.72/665,831.25
  6. Step 6: Final answer
    x = 502,356.62

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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.