Home / 690,231.40-1,035,494.30-390,852.20

Finding the Fourth Proportional to 690,231.40, 1,035,494.30 and 390,852.20

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Solution

The fourth proportional to 690,231.40, 1,035,494.30 and 390,852.20 is: 586,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,231.40 : 1,035,494.30 = 390,852.20 : x
  2. Step 2: Convert to fraction form
    690,231.40/1,035,494.30 = 390,852.20/x
  3. Step 3: Cross multiply
    690,231.40x = 1,035,494.30 × 390,852.20
  4. Step 4: Simplify right side
    690,231.40x = 404,725,225,242.46
  5. Step 5: Solve for x
    x = 404,725,225,242.46/690,231.40
  6. Step 6: Final answer
    x = 586,361.65

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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.