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Finding the Fourth Proportional to 710,627.26, 980,678.46 and 388,350.94

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Solution

The fourth proportional to 710,627.26, 980,678.46 and 388,350.94 is: 535,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,627.26 : 980,678.46 = 388,350.94 : x
  2. Step 2: Convert to fraction form
    710,627.26/980,678.46 = 388,350.94/x
  3. Step 3: Cross multiply
    710,627.26x = 980,678.46 × 388,350.94
  4. Step 4: Simplify right side
    710,627.26x = 380,847,401,778.75
  5. Step 5: Solve for x
    x = 380,847,401,778.75/710,627.26
  6. Step 6: Final answer
    x = 535,931.31

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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.