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Finding the Fourth Proportional to 612,480.38, 918,907.06 and 313,171.20

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Solution

The fourth proportional to 612,480.38, 918,907.06 and 313,171.20 is: 469,852.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,480.38 : 918,907.06 = 313,171.20 : x
  2. Step 2: Convert to fraction form
    612,480.38/918,907.06 = 313,171.20/x
  3. Step 3: Cross multiply
    612,480.38x = 918,907.06 × 313,171.20
  4. Step 4: Simplify right side
    612,480.38x = 287,775,226,668.67
  5. Step 5: Solve for x
    x = 287,775,226,668.67/612,480.38
  6. Step 6: Final answer
    x = 469,852.16

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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.