Home / 812,278-1,120,788.04-525,758.32

Finding the Fourth Proportional to 812,278, 1,120,788.04 and 525,758.32

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Solution

The fourth proportional to 812,278, 1,120,788.04 and 525,758.32 is: 725,445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,278 : 1,120,788.04 = 525,758.32 : x
  2. Step 2: Convert to fraction form
    812,278/1,120,788.04 = 525,758.32/x
  3. Step 3: Cross multiply
    812,278x = 1,120,788.04 × 525,758.32
  4. Step 4: Simplify right side
    812,278x = 589,263,636,986.49
  5. Step 5: Solve for x
    x = 589,263,636,986.49/812,278
  6. Step 6: Final answer
    x = 725,445.77

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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.