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Finding the Fourth Proportional to 660,698.46, 911,739.51 and 358,885.98

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Solution

The fourth proportional to 660,698.46, 911,739.51 and 358,885.98 is: 495,249.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,698.46 : 911,739.51 = 358,885.98 : x
  2. Step 2: Convert to fraction form
    660,698.46/911,739.51 = 358,885.98/x
  3. Step 3: Cross multiply
    660,698.46x = 911,739.51 × 358,885.98
  4. Step 4: Simplify right side
    660,698.46x = 327,210,527,551.07
  5. Step 5: Solve for x
    x = 327,210,527,551.07/660,698.46
  6. Step 6: Final answer
    x = 495,249.42

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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.