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Finding the Fourth Proportional to 507,969.48, 700,999.80 and 278,530.32

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Solution

The fourth proportional to 507,969.48, 700,999.80 and 278,530.32 is: 384,372.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,969.48 : 700,999.80 = 278,530.32 : x
  2. Step 2: Convert to fraction form
    507,969.48/700,999.80 = 278,530.32/x
  3. Step 3: Cross multiply
    507,969.48x = 700,999.80 × 278,530.32
  4. Step 4: Simplify right side
    507,969.48x = 195,249,698,613.94
  5. Step 5: Solve for x
    x = 195,249,698,613.94/507,969.48
  6. Step 6: Final answer
    x = 384,372.89

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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.