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Finding the Fourth Proportional to 1,250,956,440.03, 1,726,315,149.78 and 686,450,766.53

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Solution

The fourth proportional to 1,250,956,440.03, 1,726,315,149.78 and 686,450,766.53 is: 947,299,458.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250,956,440.03 : 1,726,315,149.78 = 686,450,766.53 : x
  2. Step 2: Convert to fraction form
    1,250,956,440.03/1,726,315,149.78 = 686,450,766.53/x
  3. Step 3: Cross multiply
    1,250,956,440.03x = 1,726,315,149.78 × 686,450,766.53
  4. Step 4: Simplify right side
    1,250,956,440.03x = 1,185,030,357,830,201,088
  5. Step 5: Solve for x
    x = 1,185,030,357,830,201,088/1,250,956,440.03
  6. Step 6: Final answer
    x = 947,299,458.17

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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.