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Finding the Fourth Proportional to 886,796.94, 1,223,779.76 and 478,898.76

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Solution

The fourth proportional to 886,796.94, 1,223,779.76 and 478,898.76 is: 660,880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,796.94 : 1,223,779.76 = 478,898.76 : x
  2. Step 2: Convert to fraction form
    886,796.94/1,223,779.76 = 478,898.76/x
  3. Step 3: Cross multiply
    886,796.94x = 1,223,779.76 × 478,898.76
  4. Step 4: Simplify right side
    886,796.94x = 586,066,613,567.65
  5. Step 5: Solve for x
    x = 586,066,613,567.65/886,796.94
  6. Step 6: Final answer
    x = 660,880.28

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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.