Home / 673,325.20-1,009,987.80-421,382.80

Finding the Fourth Proportional to 673,325.20, 1,009,987.80 and 421,382.80

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Solution

The fourth proportional to 673,325.20, 1,009,987.80 and 421,382.80 is: 632,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,325.20 : 1,009,987.80 = 421,382.80 : x
  2. Step 2: Convert to fraction form
    673,325.20/1,009,987.80 = 421,382.80/x
  3. Step 3: Cross multiply
    673,325.20x = 1,009,987.80 × 421,382.80
  4. Step 4: Simplify right side
    673,325.20x = 425,591,487,129.84
  5. Step 5: Solve for x
    x = 425,591,487,129.84/673,325.20
  6. Step 6: Final answer
    x = 632,074.20

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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.