Home / 1,248,388.80-1,872,583.20-768,998.40

Finding the Fourth Proportional to 1,248,388.80, 1,872,583.20 and 768,998.40

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Solution

The fourth proportional to 1,248,388.80, 1,872,583.20 and 768,998.40 is: 1,153,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,388.80 : 1,872,583.20 = 768,998.40 : x
  2. Step 2: Convert to fraction form
    1,248,388.80/1,872,583.20 = 768,998.40/x
  3. Step 3: Cross multiply
    1,248,388.80x = 1,872,583.20 × 768,998.40
  4. Step 4: Simplify right side
    1,248,388.80x = 1,440,013,484,666.88
  5. Step 5: Solve for x
    x = 1,440,013,484,666.88/1,248,388.80
  6. Step 6: Final answer
    x = 1,153,497.60

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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.