Home / 1,225,180.84-1,690,501.79-715,784.80

Finding the Fourth Proportional to 1,225,180.84, 1,690,501.79 and 715,784.80

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Solution

The fourth proportional to 1,225,180.84, 1,690,501.79 and 715,784.80 is: 987,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,180.84 : 1,690,501.79 = 715,784.80 : x
  2. Step 2: Convert to fraction form
    1,225,180.84/1,690,501.79 = 715,784.80/x
  3. Step 3: Cross multiply
    1,225,180.84x = 1,690,501.79 × 715,784.80
  4. Step 4: Simplify right side
    1,225,180.84x = 1,210,035,485,654.79
  5. Step 5: Solve for x
    x = 1,210,035,485,654.79/1,225,180.84
  6. Step 6: Final answer
    x = 987,638.27

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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.