Home / 830,430.80-1,245,646.20-823,432.40

Finding the Fourth Proportional to 830,430.80, 1,245,646.20 and 823,432.40

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Solution

The fourth proportional to 830,430.80, 1,245,646.20 and 823,432.40 is: 1,235,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,430.80 : 1,245,646.20 = 823,432.40 : x
  2. Step 2: Convert to fraction form
    830,430.80/1,245,646.20 = 823,432.40/x
  3. Step 3: Cross multiply
    830,430.80x = 1,245,646.20 × 823,432.40
  4. Step 4: Simplify right side
    830,430.80x = 1,025,705,440,016.88
  5. Step 5: Solve for x
    x = 1,025,705,440,016.88/830,430.80
  6. Step 6: Final answer
    x = 1,235,148.60

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Similar ratio
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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.