Home / 973,986,858.28-1,345,218,896.24-640,946,173.28

Finding the Fourth Proportional to 973,986,858.28, 1,345,218,896.24 and 640,946,173.28

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Solution

The fourth proportional to 973,986,858.28, 1,345,218,896.24 and 640,946,173.28 is: 885,240,798.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    973,986,858.28 : 1,345,218,896.24 = 640,946,173.28 : x
  2. Step 2: Convert to fraction form
    973,986,858.28/1,345,218,896.24 = 640,946,173.28/x
  3. Step 3: Cross multiply
    973,986,858.28x = 1,345,218,896.24 × 640,946,173.28
  4. Step 4: Simplify right side
    973,986,858.28x = 862,212,903,768,973,312
  5. Step 5: Solve for x
    x = 862,212,903,768,973,312/973,986,858.28
  6. Step 6: Final answer
    x = 885,240,798.11

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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.