Home / 921,792,509.72-1,271,783,251.52-564,187,484.67

Finding the Fourth Proportional to 921,792,509.72, 1,271,783,251.52 and 564,187,484.67

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Solution

The fourth proportional to 921,792,509.72, 1,271,783,251.52 and 564,187,484.67 is: 778,400,980.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,792,509.72 : 1,271,783,251.52 = 564,187,484.67 : x
  2. Step 2: Convert to fraction form
    921,792,509.72/1,271,783,251.52 = 564,187,484.67/x
  3. Step 3: Cross multiply
    921,792,509.72x = 1,271,783,251.52 × 564,187,484.67
  4. Step 4: Simplify right side
    921,792,509.72x = 717,524,193,721,043,840
  5. Step 5: Solve for x
    x = 717,524,193,721,043,840/921,792,509.72
  6. Step 6: Final answer
    x = 778,400,980.86

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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.