Home / 879,605.66-1,213,970.15-492,568.45

Finding the Fourth Proportional to 879,605.66, 1,213,970.15 and 492,568.45

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Solution

The fourth proportional to 879,605.66, 1,213,970.15 and 492,568.45 is: 679,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,605.66 : 1,213,970.15 = 492,568.45 : x
  2. Step 2: Convert to fraction form
    879,605.66/1,213,970.15 = 492,568.45/x
  3. Step 3: Cross multiply
    879,605.66x = 1,213,970.15 × 492,568.45
  4. Step 4: Simplify right side
    879,605.66x = 597,963,393,328.26
  5. Step 5: Solve for x
    x = 597,963,393,328.26/879,605.66
  6. Step 6: Final answer
    x = 679,808.49

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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.