Home / 770,636.20-1,155,955.98-415,817.32

Finding the Fourth Proportional to 770,636.20, 1,155,955.98 and 415,817.32

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Solution

The fourth proportional to 770,636.20, 1,155,955.98 and 415,817.32 is: 623,726.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,636.20 : 1,155,955.98 = 415,817.32 : x
  2. Step 2: Convert to fraction form
    770,636.20/1,155,955.98 = 415,817.32/x
  3. Step 3: Cross multiply
    770,636.20x = 1,155,955.98 × 415,817.32
  4. Step 4: Simplify right side
    770,636.20x = 480,666,517,641.57
  5. Step 5: Solve for x
    x = 480,666,517,641.57/770,636.20
  6. Step 6: Final answer
    x = 623,726.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.