Home / 720,977.48-1,081,782.36-342,171.80

Finding the Fourth Proportional to 720,977.48, 1,081,782.36 and 342,171.80

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Solution

The fourth proportional to 720,977.48, 1,081,782.36 and 342,171.80 is: 513,407.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,977.48 : 1,081,782.36 = 342,171.80 : x
  2. Step 2: Convert to fraction form
    720,977.48/1,081,782.36 = 342,171.80/x
  3. Step 3: Cross multiply
    720,977.48x = 1,081,782.36 × 342,171.80
  4. Step 4: Simplify right side
    720,977.48x = 370,155,417,329.45
  5. Step 5: Solve for x
    x = 370,155,417,329.45/720,977.48
  6. Step 6: Final answer
    x = 513,407.74

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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.