Home / 867,396.64-1,196,779.80-499,783.72

Finding the Fourth Proportional to 867,396.64, 1,196,779.80 and 499,783.72

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Solution

The fourth proportional to 867,396.64, 1,196,779.80 and 499,783.72 is: 689,570.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,396.64 : 1,196,779.80 = 499,783.72 : x
  2. Step 2: Convert to fraction form
    867,396.64/1,196,779.80 = 499,783.72/x
  3. Step 3: Cross multiply
    867,396.64x = 1,196,779.80 × 499,783.72
  4. Step 4: Simplify right side
    867,396.64x = 598,131,060,464.86
  5. Step 5: Solve for x
    x = 598,131,060,464.86/867,396.64
  6. Step 6: Final answer
    x = 689,570.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.