Home / 690,905.55-1,036,358.33-646,618.80

Finding the Fourth Proportional to 690,905.55, 1,036,358.33 and 646,618.80

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Solution

The fourth proportional to 690,905.55, 1,036,358.33 and 646,618.80 is: 969,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,905.55 : 1,036,358.33 = 646,618.80 : x
  2. Step 2: Convert to fraction form
    690,905.55/1,036,358.33 = 646,618.80/x
  3. Step 3: Cross multiply
    690,905.55x = 1,036,358.33 × 646,618.80
  4. Step 4: Simplify right side
    690,905.55x = 670,128,779,714.60
  5. Step 5: Solve for x
    x = 670,128,779,714.60/690,905.55
  6. Step 6: Final answer
    x = 969,928.20

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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.