Home / 529,386.81-730,558.24-287,669.55

Finding the Fourth Proportional to 529,386.81, 730,558.24 and 287,669.55

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Solution

The fourth proportional to 529,386.81, 730,558.24 and 287,669.55 is: 396,986.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,386.81 : 730,558.24 = 287,669.55 : x
  2. Step 2: Convert to fraction form
    529,386.81/730,558.24 = 287,669.55/x
  3. Step 3: Cross multiply
    529,386.81x = 730,558.24 × 287,669.55
  4. Step 4: Simplify right side
    529,386.81x = 210,159,360,115.32
  5. Step 5: Solve for x
    x = 210,159,360,115.32/529,386.81
  6. Step 6: Final answer
    x = 396,986.39

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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.