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Finding the Fourth Proportional to 670,428.32, 925,190.16 and 384,041.12

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Solution

The fourth proportional to 670,428.32, 925,190.16 and 384,041.12 is: 529,976.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,428.32 : 925,190.16 = 384,041.12 : x
  2. Step 2: Convert to fraction form
    670,428.32/925,190.16 = 384,041.12/x
  3. Step 3: Cross multiply
    670,428.32x = 925,190.16 × 384,041.12
  4. Step 4: Simplify right side
    670,428.32x = 355,311,065,259.38
  5. Step 5: Solve for x
    x = 355,311,065,259.38/670,428.32
  6. Step 6: Final answer
    x = 529,976.22

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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.