Home / 815,064.30-1,222,596.45-478,266.30

Finding the Fourth Proportional to 815,064.30, 1,222,596.45 and 478,266.30

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Solution

The fourth proportional to 815,064.30, 1,222,596.45 and 478,266.30 is: 717,399.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,064.30 : 1,222,596.45 = 478,266.30 : x
  2. Step 2: Convert to fraction form
    815,064.30/1,222,596.45 = 478,266.30/x
  3. Step 3: Cross multiply
    815,064.30x = 1,222,596.45 × 478,266.30
  4. Step 4: Simplify right side
    815,064.30x = 584,726,680,534.64
  5. Step 5: Solve for x
    x = 584,726,680,534.64/815,064.30
  6. Step 6: Final answer
    x = 717,399.45

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Half scale
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Double scale
Find fourth proportional to 815,065.30, 1,222,597.95 and 478,267.30
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.