Home / 830,166.20-1,245,638.10-431,257.40

Finding the Fourth Proportional to 830,166.20, 1,245,638.10 and 431,257.40

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Solution

The fourth proportional to 830,166.20, 1,245,638.10 and 431,257.40 is: 647,088.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,166.20 : 1,245,638.10 = 431,257.40 : x
  2. Step 2: Convert to fraction form
    830,166.20/1,245,638.10 = 431,257.40/x
  3. Step 3: Cross multiply
    830,166.20x = 1,245,638.10 × 431,257.40
  4. Step 4: Simplify right side
    830,166.20x = 537,190,648,346.94
  5. Step 5: Solve for x
    x = 537,190,648,346.94/830,166.20
  6. Step 6: Final answer
    x = 647,088.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.