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Finding the Fourth Proportional to 660,831.60, 912,094.29 and 374,509.56

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Solution

The fourth proportional to 660,831.60, 912,094.29 and 374,509.56 is: 516,906.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,831.60 : 912,094.29 = 374,509.56 : x
  2. Step 2: Convert to fraction form
    660,831.60/912,094.29 = 374,509.56/x
  3. Step 3: Cross multiply
    660,831.60x = 912,094.29 × 374,509.56
  4. Step 4: Simplify right side
    660,831.60x = 341,588,031,226.41
  5. Step 5: Solve for x
    x = 341,588,031,226.41/660,831.60
  6. Step 6: Final answer
    x = 516,906.32

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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.