Home / 1,223,642,820-1,688,627,334.58-666,725,867.04

Finding the Fourth Proportional to 1,223,642,820, 1,688,627,334.58 and 666,725,867.04

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Solution

The fourth proportional to 1,223,642,820, 1,688,627,334.58 and 666,725,867.04 is: 920,081,828.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,642,820 : 1,688,627,334.58 = 666,725,867.04 : x
  2. Step 2: Convert to fraction form
    1,223,642,820/1,688,627,334.58 = 666,725,867.04/x
  3. Step 3: Cross multiply
    1,223,642,820x = 1,688,627,334.58 × 666,725,867.04
  4. Step 4: Simplify right side
    1,223,642,820x = 1,125,851,523,755,294,592
  5. Step 5: Solve for x
    x = 1,125,851,523,755,294,592/1,223,642,820
  6. Step 6: Final answer
    x = 920,081,828.91

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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.