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Finding the Fourth Proportional to 560,671.45, 841,378.61 and 308,128.30

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Solution

The fourth proportional to 560,671.45, 841,378.61 and 308,128.30 is: 462,396.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,671.45 : 841,378.61 = 308,128.30 : x
  2. Step 2: Convert to fraction form
    560,671.45/841,378.61 = 308,128.30/x
  3. Step 3: Cross multiply
    560,671.45x = 841,378.61 × 308,128.30
  4. Step 4: Simplify right side
    560,671.45x = 259,252,556,548.77
  5. Step 5: Solve for x
    x = 259,252,556,548.77/560,671.45
  6. Step 6: Final answer
    x = 462,396.58

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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.