Home / 669,940.80-1,005,688.80-404,001.60

Finding the Fourth Proportional to 669,940.80, 1,005,688.80 and 404,001.60

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Solution

The fourth proportional to 669,940.80, 1,005,688.80 and 404,001.60 is: 606,471.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,940.80 : 1,005,688.80 = 404,001.60 : x
  2. Step 2: Convert to fraction form
    669,940.80/1,005,688.80 = 404,001.60/x
  3. Step 3: Cross multiply
    669,940.80x = 1,005,688.80 × 404,001.60
  4. Step 4: Simplify right side
    669,940.80x = 406,299,884,302.08
  5. Step 5: Solve for x
    x = 406,299,884,302.08/669,940.80
  6. Step 6: Final answer
    x = 606,471.32

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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.