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Finding the Fourth Proportional to 423,093.60, 634,308.14 and 289,569.05

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Solution

The fourth proportional to 423,093.60, 634,308.14 and 289,569.05 is: 434,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,093.60 : 634,308.14 = 289,569.05 : x
  2. Step 2: Convert to fraction form
    423,093.60/634,308.14 = 289,569.05/x
  3. Step 3: Cross multiply
    423,093.60x = 634,308.14 × 289,569.05
  4. Step 4: Simplify right side
    423,093.60x = 183,676,006,407.68
  5. Step 5: Solve for x
    x = 183,676,006,407.68/423,093.60
  6. Step 6: Final answer
    x = 434,126.17

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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.