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Finding the Fourth Proportional to 423,497.69, 634,685.79 and 310,649.57

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Solution

The fourth proportional to 423,497.69, 634,685.79 and 310,649.57 is: 465,563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,497.69 : 634,685.79 = 310,649.57 : x
  2. Step 2: Convert to fraction form
    423,497.69/634,685.79 = 310,649.57/x
  3. Step 3: Cross multiply
    423,497.69x = 634,685.79 × 310,649.57
  4. Step 4: Simplify right side
    423,497.69x = 197,164,867,748.61
  5. Step 5: Solve for x
    x = 197,164,867,748.61/423,497.69
  6. Step 6: Final answer
    x = 465,563.03

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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.