Home / 690,975.36-1,036,463.04-395,280

Finding the Fourth Proportional to 690,975.36, 1,036,463.04 and 395,280

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Solution

The fourth proportional to 690,975.36, 1,036,463.04 and 395,280 is: 592,920

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,975.36 : 1,036,463.04 = 395,280 : x
  2. Step 2: Convert to fraction form
    690,975.36/1,036,463.04 = 395,280/x
  3. Step 3: Cross multiply
    690,975.36x = 1,036,463.04 × 395,280
  4. Step 4: Simplify right side
    690,975.36x = 409,693,110,451.20
  5. Step 5: Solve for x
    x = 409,693,110,451.20/690,975.36
  6. Step 6: Final answer
    x = 592,920

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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.