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Finding the Fourth Proportional to 660,654.54, 911,704.14 and 358,848.54

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Solution

The fourth proportional to 660,654.54, 911,704.14 and 358,848.54 is: 495,211.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,654.54 : 911,704.14 = 358,848.54 : x
  2. Step 2: Convert to fraction form
    660,654.54/911,704.14 = 358,848.54/x
  3. Step 3: Cross multiply
    660,654.54x = 911,704.14 × 358,848.54
  4. Step 4: Simplify right side
    660,654.54x = 327,163,699,550.96
  5. Step 5: Solve for x
    x = 327,163,699,550.96/660,654.54
  6. Step 6: Final answer
    x = 495,211.46

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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.