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Finding the Fourth Proportional to 462,964.86, 639,253.98 and 355,364.46

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Solution

The fourth proportional to 462,964.86, 639,253.98 and 355,364.46 is: 490,681.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,964.86 : 639,253.98 = 355,364.46 : x
  2. Step 2: Convert to fraction form
    462,964.86/639,253.98 = 355,364.46/x
  3. Step 3: Cross multiply
    462,964.86x = 639,253.98 × 355,364.46
  4. Step 4: Simplify right side
    462,964.86x = 227,168,145,405.55
  5. Step 5: Solve for x
    x = 227,168,145,405.55/462,964.86
  6. Step 6: Final answer
    x = 490,681.18

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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.