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Finding the Fourth Proportional to 670,489.60, 1,006,900.80 and 355,561.60

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Solution

The fourth proportional to 670,489.60, 1,006,900.80 and 355,561.60 is: 533,960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,489.60 : 1,006,900.80 = 355,561.60 : x
  2. Step 2: Convert to fraction form
    670,489.60/1,006,900.80 = 355,561.60/x
  3. Step 3: Cross multiply
    670,489.60x = 1,006,900.80 × 355,561.60
  4. Step 4: Simplify right side
    670,489.60x = 358,015,259,489.28
  5. Step 5: Solve for x
    x = 358,015,259,489.28/670,489.60
  6. Step 6: Final answer
    x = 533,960.94

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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.