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Finding the Fourth Proportional to 612,673.30, 919,009.95 and 297,745.30

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Solution

The fourth proportional to 612,673.30, 919,009.95 and 297,745.30 is: 446,617.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,673.30 : 919,009.95 = 297,745.30 : x
  2. Step 2: Convert to fraction form
    612,673.30/919,009.95 = 297,745.30/x
  3. Step 3: Cross multiply
    612,673.30x = 919,009.95 × 297,745.30
  4. Step 4: Simplify right side
    612,673.30x = 273,630,893,265.74
  5. Step 5: Solve for x
    x = 273,630,893,265.74/612,673.30
  6. Step 6: Final answer
    x = 446,617.95

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Double scale
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Similar ratio
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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.