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Finding the Fourth Proportional to 634,663.76, 875,964.92 and 430,780.39

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Solution

The fourth proportional to 634,663.76, 875,964.92 and 430,780.39 is: 594,564.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,663.76 : 875,964.92 = 430,780.39 : x
  2. Step 2: Convert to fraction form
    634,663.76/875,964.92 = 430,780.39/x
  3. Step 3: Cross multiply
    634,663.76x = 875,964.92 × 430,780.39
  4. Step 4: Simplify right side
    634,663.76x = 377,348,503,330.19
  5. Step 5: Solve for x
    x = 377,348,503,330.19/634,663.76
  6. Step 6: Final answer
    x = 594,564.44

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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.