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Finding the Fourth Proportional to 483,313.40, 724,278.90 and 355,959.80

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Solution

The fourth proportional to 483,313.40, 724,278.90 and 355,959.80 is: 533,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,313.40 : 724,278.90 = 355,959.80 : x
  2. Step 2: Convert to fraction form
    483,313.40/724,278.90 = 355,959.80/x
  3. Step 3: Cross multiply
    483,313.40x = 724,278.90 × 355,959.80
  4. Step 4: Simplify right side
    483,313.40x = 257,814,172,388.22
  5. Step 5: Solve for x
    x = 257,814,172,388.22/483,313.40
  6. Step 6: Final answer
    x = 533,430.63

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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.