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Finding the Fourth Proportional to 647,200.42, 893,140.74 and 360,738.70

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Solution

The fourth proportional to 647,200.42, 893,140.74 and 360,738.70 is: 497,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,200.42 : 893,140.74 = 360,738.70 : x
  2. Step 2: Convert to fraction form
    647,200.42/893,140.74 = 360,738.70/x
  3. Step 3: Cross multiply
    647,200.42x = 893,140.74 × 360,738.70
  4. Step 4: Simplify right side
    647,200.42x = 322,190,429,464.64
  5. Step 5: Solve for x
    x = 322,190,429,464.64/647,200.42
  6. Step 6: Final answer
    x = 497,821.72

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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.