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Finding the Fourth Proportional to 605,430.40, 908,145.60 and 559,940.80

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Solution

The fourth proportional to 605,430.40, 908,145.60 and 559,940.80 is: 839,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,430.40 : 908,145.60 = 559,940.80 : x
  2. Step 2: Convert to fraction form
    605,430.40/908,145.60 = 559,940.80/x
  3. Step 3: Cross multiply
    605,430.40x = 908,145.60 × 559,940.80
  4. Step 4: Simplify right side
    605,430.40x = 508,507,773,780.48
  5. Step 5: Solve for x
    x = 508,507,773,780.48/605,430.40
  6. Step 6: Final answer
    x = 839,911.20

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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.