Home / 1,100,393,992.52-1,518,556,247.70-630,485,880.20

Finding the Fourth Proportional to 1,100,393,992.52, 1,518,556,247.70 and 630,485,880.20

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Solution

The fourth proportional to 1,100,393,992.52, 1,518,556,247.70 and 630,485,880.20 is: 870,077,698.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,393,992.52 : 1,518,556,247.70 = 630,485,880.20 : x
  2. Step 2: Convert to fraction form
    1,100,393,992.52/1,518,556,247.70 = 630,485,880.20/x
  3. Step 3: Cross multiply
    1,100,393,992.52x = 1,518,556,247.70 × 630,485,880.20
  4. Step 4: Simplify right side
    1,100,393,992.52x = 957,428,272,464,343,808
  5. Step 5: Solve for x
    x = 957,428,272,464,343,808/1,100,393,992.52
  6. Step 6: Final answer
    x = 870,077,698.51

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.