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Finding the Fourth Proportional to 908,906.40, 1,362,484.80 and 706,390.20

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Solution

The fourth proportional to 908,906.40, 1,362,484.80 and 706,390.20 is: 1,058,905.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,906.40 : 1,362,484.80 = 706,390.20 : x
  2. Step 2: Convert to fraction form
    908,906.40/1,362,484.80 = 706,390.20/x
  3. Step 3: Cross multiply
    908,906.40x = 1,362,484.80 × 706,390.20
  4. Step 4: Simplify right side
    908,906.40x = 962,445,910,368.96
  5. Step 5: Solve for x
    x = 962,445,910,368.96/908,906.40
  6. Step 6: Final answer
    x = 1,058,905.42

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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.