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Finding the Fourth Proportional to 660,151.94, 911,031.38 and 373,665.87

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Solution

The fourth proportional to 660,151.94, 911,031.38 and 373,665.87 is: 515,671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,151.94 : 911,031.38 = 373,665.87 : x
  2. Step 2: Convert to fraction form
    660,151.94/911,031.38 = 373,665.87/x
  3. Step 3: Cross multiply
    660,151.94x = 911,031.38 × 373,665.87
  4. Step 4: Simplify right side
    660,151.94x = 340,421,331,336.67
  5. Step 5: Solve for x
    x = 340,421,331,336.67/660,151.94
  6. Step 6: Final answer
    x = 515,671.19

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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.