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Finding the Fourth Proportional to 647,211.30, 893,155.74 and 360,749.55

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Solution

The fourth proportional to 647,211.30, 893,155.74 and 360,749.55 is: 497,836.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,211.30 : 893,155.74 = 360,749.55 : x
  2. Step 2: Convert to fraction form
    647,211.30/893,155.74 = 360,749.55/x
  3. Step 3: Cross multiply
    647,211.30x = 893,155.74 × 360,749.55
  4. Step 4: Simplify right side
    647,211.30x = 322,205,531,284.92
  5. Step 5: Solve for x
    x = 322,205,531,284.92/647,211.30
  6. Step 6: Final answer
    x = 497,836.69

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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.