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Finding the Fourth Proportional to 610,418.70, 915,628.05 and 492,320.70

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Solution

The fourth proportional to 610,418.70, 915,628.05 and 492,320.70 is: 738,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,418.70 : 915,628.05 = 492,320.70 : x
  2. Step 2: Convert to fraction form
    610,418.70/915,628.05 = 492,320.70/x
  3. Step 3: Cross multiply
    610,418.70x = 915,628.05 × 492,320.70
  4. Step 4: Simplify right side
    610,418.70x = 450,782,642,515.64
  5. Step 5: Solve for x
    x = 450,782,642,515.64/610,418.70
  6. Step 6: Final answer
    x = 738,481.05

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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.