Home / 661,479,271.08-992,007,301.86-218,739,705.72

Finding the Fourth Proportional to 661,479,271.08, 992,007,301.86 and 218,739,705.72

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Solution

The fourth proportional to 661,479,271.08, 992,007,301.86 and 218,739,705.72 is: 328,039,584.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,479,271.08 : 992,007,301.86 = 218,739,705.72 : x
  2. Step 2: Convert to fraction form
    661,479,271.08/992,007,301.86 = 218,739,705.72/x
  3. Step 3: Cross multiply
    661,479,271.08x = 992,007,301.86 × 218,739,705.72
  4. Step 4: Simplify right side
    661,479,271.08x = 216,991,385,280,947,616
  5. Step 5: Solve for x
    x = 216,991,385,280,947,616/661,479,271.08
  6. Step 6: Final answer
    x = 328,039,584.56

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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.