Home / 1,223,642,945.63-1,688,627,507.99-666,725,992.70

Finding the Fourth Proportional to 1,223,642,945.63, 1,688,627,507.99 and 666,725,992.70

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Solution

The fourth proportional to 1,223,642,945.63, 1,688,627,507.99 and 666,725,992.70 is: 920,082,002.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,642,945.63 : 1,688,627,507.99 = 666,725,992.70 : x
  2. Step 2: Convert to fraction form
    1,223,642,945.63/1,688,627,507.99 = 666,725,992.70/x
  3. Step 3: Cross multiply
    1,223,642,945.63x = 1,688,627,507.99 × 666,725,992.70
  4. Step 4: Simplify right side
    1,223,642,945.63x = 1,125,851,851,553,383,168
  5. Step 5: Solve for x
    x = 1,125,851,851,553,383,168/1,223,642,945.63
  6. Step 6: Final answer
    x = 920,082,002.33

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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.