Home / 1,223,642,815.27-1,688,627,328.09-666,725,862.34

Finding the Fourth Proportional to 1,223,642,815.27, 1,688,627,328.09 and 666,725,862.34

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Solution

The fourth proportional to 1,223,642,815.27, 1,688,627,328.09 and 666,725,862.34 is: 920,081,822.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,642,815.27 : 1,688,627,328.09 = 666,725,862.34 : x
  2. Step 2: Convert to fraction form
    1,223,642,815.27/1,688,627,328.09 = 666,725,862.34/x
  3. Step 3: Cross multiply
    1,223,642,815.27x = 1,688,627,328.09 × 666,725,862.34
  4. Step 4: Simplify right side
    1,223,642,815.27x = 1,125,851,511,483,699,072
  5. Step 5: Solve for x
    x = 1,125,851,511,483,699,072/1,223,642,815.27
  6. Step 6: Final answer
    x = 920,081,822.43

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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.