Home / 2,788,320.80-4,186,628.40-2,157,946.40

Finding the Fourth Proportional to 2,788,320.80, 4,186,628.40 and 2,157,946.40

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Solution

The fourth proportional to 2,788,320.80, 4,186,628.40 and 2,157,946.40 is: 3,240,129.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788,320.80 : 4,186,628.40 = 2,157,946.40 : x
  2. Step 2: Convert to fraction form
    2,788,320.80/4,186,628.40 = 2,157,946.40/x
  3. Step 3: Cross multiply
    2,788,320.80x = 4,186,628.40 × 2,157,946.40
  4. Step 4: Simplify right side
    2,788,320.80x = 9,034,519,683,917.76
  5. Step 5: Solve for x
    x = 9,034,519,683,917.76/2,788,320.80
  6. Step 6: Final answer
    x = 3,240,129.21

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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.