Home / 690,773.54-1,036,395.58-421,440.88

Finding the Fourth Proportional to 690,773.54, 1,036,395.58 and 421,440.88

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Solution

The fourth proportional to 690,773.54, 1,036,395.58 and 421,440.88 is: 632,304.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,773.54 : 1,036,395.58 = 421,440.88 : x
  2. Step 2: Convert to fraction form
    690,773.54/1,036,395.58 = 421,440.88/x
  3. Step 3: Cross multiply
    690,773.54x = 1,036,395.58 × 421,440.88
  4. Step 4: Simplify right side
    690,773.54x = 436,779,464,209.71
  5. Step 5: Solve for x
    x = 436,779,464,209.71/690,773.54
  6. Step 6: Final answer
    x = 632,304.86

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1.5x scale

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.