Home / 830,168.20-1,245,641.10-431,259.40

Finding the Fourth Proportional to 830,168.20, 1,245,641.10 and 431,259.40

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Solution

The fourth proportional to 830,168.20, 1,245,641.10 and 431,259.40 is: 647,091.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,168.20 : 1,245,641.10 = 431,259.40 : x
  2. Step 2: Convert to fraction form
    830,168.20/1,245,641.10 = 431,259.40/x
  3. Step 3: Cross multiply
    830,168.20x = 1,245,641.10 × 431,259.40
  4. Step 4: Simplify right side
    830,168.20x = 537,194,433,401.34
  5. Step 5: Solve for x
    x = 537,194,433,401.34/830,168.20
  6. Step 6: Final answer
    x = 647,091.08

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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.