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Finding the Fourth Proportional to 646,975.20, 970,333.20 and 310,015.20

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Solution

The fourth proportional to 646,975.20, 970,333.20 and 310,015.20 is: 464,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,975.20 : 970,333.20 = 310,015.20 : x
  2. Step 2: Convert to fraction form
    646,975.20/970,333.20 = 310,015.20/x
  3. Step 3: Cross multiply
    646,975.20x = 970,333.20 × 310,015.20
  4. Step 4: Simplify right side
    646,975.20x = 300,818,041,064.64
  5. Step 5: Solve for x
    x = 300,818,041,064.64/646,975.20
  6. Step 6: Final answer
    x = 464,960.70

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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.