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Finding the Fourth Proportional to 641,946.80, 962,482.80 and 305,148.80

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Solution

The fourth proportional to 641,946.80, 962,482.80 and 305,148.80 is: 457,515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,946.80 : 962,482.80 = 305,148.80 : x
  2. Step 2: Convert to fraction form
    641,946.80/962,482.80 = 305,148.80/x
  3. Step 3: Cross multiply
    641,946.80x = 962,482.80 × 305,148.80
  4. Step 4: Simplify right side
    641,946.80x = 293,700,471,440.64
  5. Step 5: Solve for x
    x = 293,700,471,440.64/641,946.80
  6. Step 6: Final answer
    x = 457,515.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.