Home / 807,564.60-1,209,986.10-638,436.60

Finding the Fourth Proportional to 807,564.60, 1,209,986.10 and 638,436.60

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Solution

The fourth proportional to 807,564.60, 1,209,986.10 and 638,436.60 is: 956,579.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,564.60 : 1,209,986.10 = 638,436.60 : x
  2. Step 2: Convert to fraction form
    807,564.60/1,209,986.10 = 638,436.60/x
  3. Step 3: Cross multiply
    807,564.60x = 1,209,986.10 × 638,436.60
  4. Step 4: Simplify right side
    807,564.60x = 772,499,411,731.26
  5. Step 5: Solve for x
    x = 772,499,411,731.26/807,564.60
  6. Step 6: Final answer
    x = 956,579.09

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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.