Home / 714,421.69-985,914.65-392,161.77

Finding the Fourth Proportional to 714,421.69, 985,914.65 and 392,161.77

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Solution

The fourth proportional to 714,421.69, 985,914.65 and 392,161.77 is: 541,190.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,421.69 : 985,914.65 = 392,161.77 : x
  2. Step 2: Convert to fraction form
    714,421.69/985,914.65 = 392,161.77/x
  3. Step 3: Cross multiply
    714,421.69x = 985,914.65 × 392,161.77
  4. Step 4: Simplify right side
    714,421.69x = 386,638,035,193.34
  5. Step 5: Solve for x
    x = 386,638,035,193.34/714,421.69
  6. Step 6: Final answer
    x = 541,190.23

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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.