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Finding the Fourth Proportional to 670,335.89, 925,361.72 and 398,491.79

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Solution

The fourth proportional to 670,335.89, 925,361.72 and 398,491.79 is: 550,095.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,335.89 : 925,361.72 = 398,491.79 : x
  2. Step 2: Convert to fraction form
    670,335.89/925,361.72 = 398,491.79/x
  3. Step 3: Cross multiply
    670,335.89x = 925,361.72 × 398,491.79
  4. Step 4: Simplify right side
    670,335.89x = 368,749,043,075.36
  5. Step 5: Solve for x
    x = 368,749,043,075.36/670,335.89
  6. Step 6: Final answer
    x = 550,095.93

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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.