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Finding the Fourth Proportional to 661,903.37, 913,430.63 and 360,099.53

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Solution

The fourth proportional to 661,903.37, 913,430.63 and 360,099.53 is: 496,939.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,903.37 : 913,430.63 = 360,099.53 : x
  2. Step 2: Convert to fraction form
    661,903.37/913,430.63 = 360,099.53/x
  3. Step 3: Cross multiply
    661,903.37x = 913,430.63 × 360,099.53
  4. Step 4: Simplify right side
    661,903.37x = 328,925,940,550.60
  5. Step 5: Solve for x
    x = 328,925,940,550.60/661,903.37
  6. Step 6: Final answer
    x = 496,939.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.