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Finding the Fourth Proportional to 868,009.60, 1,300,977.60 and 447,068.80

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Solution

The fourth proportional to 868,009.60, 1,300,977.60 and 447,068.80 is: 670,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,009.60 : 1,300,977.60 = 447,068.80 : x
  2. Step 2: Convert to fraction form
    868,009.60/1,300,977.60 = 447,068.80/x
  3. Step 3: Cross multiply
    868,009.60x = 1,300,977.60 × 447,068.80
  4. Step 4: Simplify right side
    868,009.60x = 581,626,494,458.88
  5. Step 5: Solve for x
    x = 581,626,494,458.88/868,009.60
  6. Step 6: Final answer
    x = 670,069.20

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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.