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Finding the Fourth Proportional to 710,595.87, 980,580.98 and 388,308.62

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Solution

The fourth proportional to 710,595.87, 980,580.98 and 388,308.62 is: 535,843.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,595.87 : 980,580.98 = 388,308.62 : x
  2. Step 2: Convert to fraction form
    710,595.87/980,580.98 = 388,308.62/x
  3. Step 3: Cross multiply
    710,595.87x = 980,580.98 × 388,308.62
  4. Step 4: Simplify right side
    710,595.87x = 380,768,040,297.60
  5. Step 5: Solve for x
    x = 380,768,040,297.60/710,595.87
  6. Step 6: Final answer
    x = 535,843.31

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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.