Home / 867,392.64-1,196,774.28-499,779.72

Finding the Fourth Proportional to 867,392.64, 1,196,774.28 and 499,779.72

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Solution

The fourth proportional to 867,392.64, 1,196,774.28 and 499,779.72 is: 689,564.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,392.64 : 1,196,774.28 = 499,779.72 : x
  2. Step 2: Convert to fraction form
    867,392.64/1,196,774.28 = 499,779.72/x
  3. Step 3: Cross multiply
    867,392.64x = 1,196,774.28 × 499,779.72
  4. Step 4: Simplify right side
    867,392.64x = 598,123,514,561.60
  5. Step 5: Solve for x
    x = 598,123,514,561.60/867,392.64
  6. Step 6: Final answer
    x = 689,564.89

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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.