Home / 1,223,642,823.99-1,688,627,340.09-666,725,871.03

Finding the Fourth Proportional to 1,223,642,823.99, 1,688,627,340.09 and 666,725,871.03

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Solution

The fourth proportional to 1,223,642,823.99, 1,688,627,340.09 and 666,725,871.03 is: 920,081,834.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,642,823.99 : 1,688,627,340.09 = 666,725,871.03 : x
  2. Step 2: Convert to fraction form
    1,223,642,823.99/1,688,627,340.09 = 666,725,871.03/x
  3. Step 3: Cross multiply
    1,223,642,823.99x = 1,688,627,340.09 × 666,725,871.03
  4. Step 4: Simplify right side
    1,223,642,823.99x = 1,125,851,534,166,577,152
  5. Step 5: Solve for x
    x = 1,125,851,534,166,577,152/1,223,642,823.99
  6. Step 6: Final answer
    x = 920,081,834.42

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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.