Home / 736,628.80-1,104,943.20-421,117.60

Finding the Fourth Proportional to 736,628.80, 1,104,943.20 and 421,117.60

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Solution

The fourth proportional to 736,628.80, 1,104,943.20 and 421,117.60 is: 631,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,628.80 : 1,104,943.20 = 421,117.60 : x
  2. Step 2: Convert to fraction form
    736,628.80/1,104,943.20 = 421,117.60/x
  3. Step 3: Cross multiply
    736,628.80x = 1,104,943.20 × 421,117.60
  4. Step 4: Simplify right side
    736,628.80x = 465,311,028,520.32
  5. Step 5: Solve for x
    x = 465,311,028,520.32/736,628.80
  6. Step 6: Final answer
    x = 631,676.40

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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.