Home / 1,200,623,357.64-1,655,544,528.90-782,159,628.36

Finding the Fourth Proportional to 1,200,623,357.64, 1,655,544,528.90 and 782,159,628.36

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Solution

The fourth proportional to 1,200,623,357.64, 1,655,544,528.90 and 782,159,628.36 is: 1,078,523,156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,623,357.64 : 1,655,544,528.90 = 782,159,628.36 : x
  2. Step 2: Convert to fraction form
    1,200,623,357.64/1,655,544,528.90 = 782,159,628.36/x
  3. Step 3: Cross multiply
    1,200,623,357.64x = 1,655,544,528.90 × 782,159,628.36
  4. Step 4: Simplify right side
    1,200,623,357.64x = 1,294,900,093,457,855,488
  5. Step 5: Solve for x
    x = 1,294,900,093,457,855,488/1,200,623,357.64
  6. Step 6: Final answer
    x = 1,078,523,156.51

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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.