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Finding the Fourth Proportional to 660,925, 912,078.93 and 359,119

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Solution

The fourth proportional to 660,925, 912,078.93 and 359,119 is: 495,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,925 : 912,078.93 = 359,119 : x
  2. Step 2: Convert to fraction form
    660,925/912,078.93 = 359,119/x
  3. Step 3: Cross multiply
    660,925x = 912,078.93 × 359,119
  4. Step 4: Simplify right side
    660,925x = 327,544,873,262.67
  5. Step 5: Solve for x
    x = 327,544,873,262.67/660,925
  6. Step 6: Final answer
    x = 495,585.54

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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.