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Finding the Fourth Proportional to 670,057.58, 924,894.96 and 428,989.43

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Solution

The fourth proportional to 670,057.58, 924,894.96 and 428,989.43 is: 592,143.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,057.58 : 924,894.96 = 428,989.43 : x
  2. Step 2: Convert to fraction form
    670,057.58/924,894.96 = 428,989.43/x
  3. Step 3: Cross multiply
    670,057.58x = 924,894.96 × 428,989.43
  4. Step 4: Simplify right side
    670,057.58x = 396,770,162,403.80
  5. Step 5: Solve for x
    x = 396,770,162,403.80/670,057.58
  6. Step 6: Final answer
    x = 592,143.38

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Double scale
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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.