Home / 312,432,848.80-468,649,273.20-261,792,426.40

Finding the Fourth Proportional to 312,432,848.80, 468,649,273.20 and 261,792,426.40

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Solution

The fourth proportional to 312,432,848.80, 468,649,273.20 and 261,792,426.40 is: 392,688,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,432,848.80 : 468,649,273.20 = 261,792,426.40 : x
  2. Step 2: Convert to fraction form
    312,432,848.80/468,649,273.20 = 261,792,426.40/x
  3. Step 3: Cross multiply
    312,432,848.80x = 468,649,273.20 × 261,792,426.40
  4. Step 4: Simplify right side
    312,432,848.80x = 122,688,830,361,624,496
  5. Step 5: Solve for x
    x = 122,688,830,361,624,496/312,432,848.80
  6. Step 6: Final answer
    x = 392,688,639.60

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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.