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Finding the Fourth Proportional to 612,975.60, 917,713.80 and 542,991.60

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Solution

The fourth proportional to 612,975.60, 917,713.80 and 542,991.60 is: 812,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,975.60 : 917,713.80 = 542,991.60 : x
  2. Step 2: Convert to fraction form
    612,975.60/917,713.80 = 542,991.60/x
  3. Step 3: Cross multiply
    612,975.60x = 917,713.80 × 542,991.60
  4. Step 4: Simplify right side
    612,975.60x = 498,310,884,604.08
  5. Step 5: Solve for x
    x = 498,310,884,604.08/612,975.60
  6. Step 6: Final answer
    x = 812,937.55

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1.5x scale

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.