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Finding the Fourth Proportional to 670,714.21, 925,312.47 and 380,264.61

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Solution

The fourth proportional to 670,714.21, 925,312.47 and 380,264.61 is: 524,610.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,714.21 : 925,312.47 = 380,264.61 : x
  2. Step 2: Convert to fraction form
    670,714.21/925,312.47 = 380,264.61/x
  3. Step 3: Cross multiply
    670,714.21x = 925,312.47 × 380,264.61
  4. Step 4: Simplify right side
    670,714.21x = 351,863,585,532.69
  5. Step 5: Solve for x
    x = 351,863,585,532.69/670,714.21
  6. Step 6: Final answer
    x = 524,610.30

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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.