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Finding the Fourth Proportional to 670,779.80, 925,807.56 and 384,491.60

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Solution

The fourth proportional to 670,779.80, 925,807.56 and 384,491.60 is: 530,673.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,779.80 : 925,807.56 = 384,491.60 : x
  2. Step 2: Convert to fraction form
    670,779.80/925,807.56 = 384,491.60/x
  3. Step 3: Cross multiply
    670,779.80x = 925,807.56 × 384,491.60
  4. Step 4: Simplify right side
    670,779.80x = 355,965,230,036.50
  5. Step 5: Solve for x
    x = 355,965,230,036.50/670,779.80
  6. Step 6: Final answer
    x = 530,673.75

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1.5x scale

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.