Home / 726,085.80-1,089,128.70-698,529.60

Finding the Fourth Proportional to 726,085.80, 1,089,128.70 and 698,529.60

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Solution

The fourth proportional to 726,085.80, 1,089,128.70 and 698,529.60 is: 1,047,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,085.80 : 1,089,128.70 = 698,529.60 : x
  2. Step 2: Convert to fraction form
    726,085.80/1,089,128.70 = 698,529.60/x
  3. Step 3: Cross multiply
    726,085.80x = 1,089,128.70 × 698,529.60
  4. Step 4: Simplify right side
    726,085.80x = 760,788,635,159.52
  5. Step 5: Solve for x
    x = 760,788,635,159.52/726,085.80
  6. Step 6: Final answer
    x = 1,047,794.40

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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.