Home / 815,276.34-1,124,829.05-470,986.63

Finding the Fourth Proportional to 815,276.34, 1,124,829.05 and 470,986.63

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Solution

The fourth proportional to 815,276.34, 1,124,829.05 and 470,986.63 is: 649,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,276.34 : 1,124,829.05 = 470,986.63 : x
  2. Step 2: Convert to fraction form
    815,276.34/1,124,829.05 = 470,986.63/x
  3. Step 3: Cross multiply
    815,276.34x = 1,124,829.05 × 470,986.63
  4. Step 4: Simplify right side
    815,276.34x = 529,779,438,418.60
  5. Step 5: Solve for x
    x = 529,779,438,418.60/815,276.34
  6. Step 6: Final answer
    x = 649,815.79

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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.