Home / 921,792,510.72-1,271,783,252.90-564,187,485.67

Finding the Fourth Proportional to 921,792,510.72, 1,271,783,252.90 and 564,187,485.67

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Solution

The fourth proportional to 921,792,510.72, 1,271,783,252.90 and 564,187,485.67 is: 778,400,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,792,510.72 : 1,271,783,252.90 = 564,187,485.67 : x
  2. Step 2: Convert to fraction form
    921,792,510.72/1,271,783,252.90 = 564,187,485.67/x
  3. Step 3: Cross multiply
    921,792,510.72x = 1,271,783,252.90 × 564,187,485.67
  4. Step 4: Simplify right side
    921,792,510.72x = 717,524,195,770,864,768
  5. Step 5: Solve for x
    x = 717,524,195,770,864,768/921,792,510.72
  6. Step 6: Final answer
    x = 778,400,982.25

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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.