Home / 648,003.70-972,005.55-579,769.30

Finding the Fourth Proportional to 648,003.70, 972,005.55 and 579,769.30

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Solution

The fourth proportional to 648,003.70, 972,005.55 and 579,769.30 is: 869,653.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,003.70 : 972,005.55 = 579,769.30 : x
  2. Step 2: Convert to fraction form
    648,003.70/972,005.55 = 579,769.30/x
  3. Step 3: Cross multiply
    648,003.70x = 972,005.55 × 579,769.30
  4. Step 4: Simplify right side
    648,003.70x = 563,538,977,319.62
  5. Step 5: Solve for x
    x = 563,538,977,319.62/648,003.70
  6. Step 6: Final answer
    x = 869,653.95

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Half scale
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Double scale
Find fourth proportional to 648,004.70, 972,007.05 and 579,770.30
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.