Home / 1,130,650.79-1,560,357.88-640,715.40

Finding the Fourth Proportional to 1,130,650.79, 1,560,357.88 and 640,715.40

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Solution

The fourth proportional to 1,130,650.79, 1,560,357.88 and 640,715.40 is: 884,221.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,650.79 : 1,560,357.88 = 640,715.40 : x
  2. Step 2: Convert to fraction form
    1,130,650.79/1,560,357.88 = 640,715.40/x
  3. Step 3: Cross multiply
    1,130,650.79x = 1,560,357.88 × 640,715.40
  4. Step 4: Simplify right side
    1,130,650.79x = 999,745,321,625.56
  5. Step 5: Solve for x
    x = 999,745,321,625.56/1,130,650.79
  6. Step 6: Final answer
    x = 884,221.14

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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.