Home / 830,000.10-1,245,000.15-823,779.30

Finding the Fourth Proportional to 830,000.10, 1,245,000.15 and 823,779.30

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Solution

The fourth proportional to 830,000.10, 1,245,000.15 and 823,779.30 is: 1,235,668.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,000.10 : 1,245,000.15 = 823,779.30 : x
  2. Step 2: Convert to fraction form
    830,000.10/1,245,000.15 = 823,779.30/x
  3. Step 3: Cross multiply
    830,000.10x = 1,245,000.15 × 823,779.30
  4. Step 4: Simplify right side
    830,000.10x = 1,025,605,352,066.90
  5. Step 5: Solve for x
    x = 1,025,605,352,066.90/830,000.10
  6. Step 6: Final answer
    x = 1,235,668.95

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Double scale
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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.