Home / 7,877,110.80-11,815,666.20-2,828,931.60

Finding the Fourth Proportional to 7,877,110.80, 11,815,666.20 and 2,828,931.60

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Solution

The fourth proportional to 7,877,110.80, 11,815,666.20 and 2,828,931.60 is: 4,243,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877,110.80 : 11,815,666.20 = 2,828,931.60 : x
  2. Step 2: Convert to fraction form
    7,877,110.80/11,815,666.20 = 2,828,931.60/x
  3. Step 3: Cross multiply
    7,877,110.80x = 11,815,666.20 × 2,828,931.60
  4. Step 4: Simplify right side
    7,877,110.80x = 33,425,711,488,231.92
  5. Step 5: Solve for x
    x = 33,425,711,488,231.92/7,877,110.80
  6. Step 6: Final answer
    x = 4,243,397.40

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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.