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Finding the Fourth Proportional to 599,402.40, 900,140.40 and 389,968.80

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Solution

The fourth proportional to 599,402.40, 900,140.40 and 389,968.80 is: 585,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,402.40 : 900,140.40 = 389,968.80 : x
  2. Step 2: Convert to fraction form
    599,402.40/900,140.40 = 389,968.80/x
  3. Step 3: Cross multiply
    599,402.40x = 900,140.40 × 389,968.80
  4. Step 4: Simplify right side
    599,402.40x = 351,026,671,619.52
  5. Step 5: Solve for x
    x = 351,026,671,619.52/599,402.40
  6. Step 6: Final answer
    x = 585,627.74

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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.