Home / 678,456,098.40-1,017,684,147.60-542,407,202.40

Finding the Fourth Proportional to 678,456,098.40, 1,017,684,147.60 and 542,407,202.40

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Solution

The fourth proportional to 678,456,098.40, 1,017,684,147.60 and 542,407,202.40 is: 813,610,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,456,098.40 : 1,017,684,147.60 = 542,407,202.40 : x
  2. Step 2: Convert to fraction form
    678,456,098.40/1,017,684,147.60 = 542,407,202.40/x
  3. Step 3: Cross multiply
    678,456,098.40x = 1,017,684,147.60 × 542,407,202.40
  4. Step 4: Simplify right side
    678,456,098.40x = 551,999,211,426,544,640
  5. Step 5: Solve for x
    x = 551,999,211,426,544,640/678,456,098.40
  6. Step 6: Final answer
    x = 813,610,803.60

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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.