Home / 1,250,956,441.78-1,726,315,152.20-686,450,768.28

Finding the Fourth Proportional to 1,250,956,441.78, 1,726,315,152.20 and 686,450,768.28

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Solution

The fourth proportional to 1,250,956,441.78, 1,726,315,152.20 and 686,450,768.28 is: 947,299,460.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250,956,441.78 : 1,726,315,152.20 = 686,450,768.28 : x
  2. Step 2: Convert to fraction form
    1,250,956,441.78/1,726,315,152.20 = 686,450,768.28/x
  3. Step 3: Cross multiply
    1,250,956,441.78x = 1,726,315,152.20 × 686,450,768.28
  4. Step 4: Simplify right side
    1,250,956,441.78x = 1,185,030,362,521,095,168
  5. Step 5: Solve for x
    x = 1,185,030,362,521,095,168/1,250,956,441.78
  6. Step 6: Final answer
    x = 947,299,460.59

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Double scale
Find fourth proportional to 1,250,956,442.78, 1,726,315,153.58 and 686,450,769.28
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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.