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Finding the Fourth Proportional to 491,567.19, 678,000.56 and 370,713.57

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Solution

The fourth proportional to 491,567.19, 678,000.56 and 370,713.57 is: 511,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,567.19 : 678,000.56 = 370,713.57 : x
  2. Step 2: Convert to fraction form
    491,567.19/678,000.56 = 370,713.57/x
  3. Step 3: Cross multiply
    491,567.19x = 678,000.56 × 370,713.57
  4. Step 4: Simplify right side
    491,567.19x = 251,344,006,206.03
  5. Step 5: Solve for x
    x = 251,344,006,206.03/491,567.19
  6. Step 6: Final answer
    x = 511,311.60

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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.