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Finding the Fourth Proportional to 1,026,632, 1,539,948 and 427,875.20

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Solution

The fourth proportional to 1,026,632, 1,539,948 and 427,875.20 is: 641,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026,632 : 1,539,948 = 427,875.20 : x
  2. Step 2: Convert to fraction form
    1,026,632/1,539,948 = 427,875.20/x
  3. Step 3: Cross multiply
    1,026,632x = 1,539,948 × 427,875.20
  4. Step 4: Simplify right side
    1,026,632x = 658,905,558,489.60
  5. Step 5: Solve for x
    x = 658,905,558,489.60/1,026,632
  6. Step 6: Final answer
    x = 641,812.80

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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.