Home / 990,117.24-1,485,495.69-457,987.32

Finding the Fourth Proportional to 990,117.24, 1,485,495.69 and 457,987.32

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Solution

The fourth proportional to 990,117.24, 1,485,495.69 and 457,987.32 is: 687,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,117.24 : 1,485,495.69 = 457,987.32 : x
  2. Step 2: Convert to fraction form
    990,117.24/1,485,495.69 = 457,987.32/x
  3. Step 3: Cross multiply
    990,117.24x = 1,485,495.69 × 457,987.32
  4. Step 4: Simplify right side
    990,117.24x = 680,338,189,934.65
  5. Step 5: Solve for x
    x = 680,338,189,934.65/990,117.24
  6. Step 6: Final answer
    x = 687,128.92

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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.