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Finding the Fourth Proportional to 614,430.60, 921,645.90 and 585,400.20

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Solution

The fourth proportional to 614,430.60, 921,645.90 and 585,400.20 is: 878,100.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,430.60 : 921,645.90 = 585,400.20 : x
  2. Step 2: Convert to fraction form
    614,430.60/921,645.90 = 585,400.20/x
  3. Step 3: Cross multiply
    614,430.60x = 921,645.90 × 585,400.20
  4. Step 4: Simplify right side
    614,430.60x = 539,531,694,189.18
  5. Step 5: Solve for x
    x = 539,531,694,189.18/614,430.60
  6. Step 6: Final answer
    x = 878,100.30

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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.