Home / 820,564.40-1,232,113.80-447,316.40

Finding the Fourth Proportional to 820,564.40, 1,232,113.80 and 447,316.40

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Solution

The fourth proportional to 820,564.40, 1,232,113.80 and 447,316.40 is: 671,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,564.40 : 1,232,113.80 = 447,316.40 : x
  2. Step 2: Convert to fraction form
    820,564.40/1,232,113.80 = 447,316.40/x
  3. Step 3: Cross multiply
    820,564.40x = 1,232,113.80 × 447,316.40
  4. Step 4: Simplify right side
    820,564.40x = 551,144,709,406.32
  5. Step 5: Solve for x
    x = 551,144,709,406.32/820,564.40
  6. Step 6: Final answer
    x = 671,665.39

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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.