Home / 939,729,812.40-1,409,594,718.60-800,657,607.60

Finding the Fourth Proportional to 939,729,812.40, 1,409,594,718.60 and 800,657,607.60

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Solution

The fourth proportional to 939,729,812.40, 1,409,594,718.60 and 800,657,607.60 is: 1,200,986,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,729,812.40 : 1,409,594,718.60 = 800,657,607.60 : x
  2. Step 2: Convert to fraction form
    939,729,812.40/1,409,594,718.60 = 800,657,607.60/x
  3. Step 3: Cross multiply
    939,729,812.40x = 1,409,594,718.60 × 800,657,607.60
  4. Step 4: Simplify right side
    939,729,812.40x = 1,128,602,735,079,871,232
  5. Step 5: Solve for x
    x = 1,128,602,735,079,871,232/939,729,812.40
  6. Step 6: Final answer
    x = 1,200,986,411.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.