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Finding the Fourth Proportional to 670,842.80, 1,007,041.80 and 404,903.60

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Solution

The fourth proportional to 670,842.80, 1,007,041.80 and 404,903.60 is: 607,824.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,842.80 : 1,007,041.80 = 404,903.60 : x
  2. Step 2: Convert to fraction form
    670,842.80/1,007,041.80 = 404,903.60/x
  3. Step 3: Cross multiply
    670,842.80x = 1,007,041.80 × 404,903.60
  4. Step 4: Simplify right side
    670,842.80x = 407,754,850,170.48
  5. Step 5: Solve for x
    x = 407,754,850,170.48/670,842.80
  6. Step 6: Final answer
    x = 607,824.74

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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.