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Finding the Fourth Proportional to 707,069.52, 975,745.80 and 389,117.52

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Solution

The fourth proportional to 707,069.52, 975,745.80 and 389,117.52 is: 536,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,069.52 : 975,745.80 = 389,117.52 : x
  2. Step 2: Convert to fraction form
    707,069.52/975,745.80 = 389,117.52/x
  3. Step 3: Cross multiply
    707,069.52x = 975,745.80 × 389,117.52
  4. Step 4: Simplify right side
    707,069.52x = 379,679,785,846.42
  5. Step 5: Solve for x
    x = 379,679,785,846.42/707,069.52
  6. Step 6: Final answer
    x = 536,976.60

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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.