Home / 879,329.60-1,318,994.40-643,133.60

Finding the Fourth Proportional to 879,329.60, 1,318,994.40 and 643,133.60

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Solution

The fourth proportional to 879,329.60, 1,318,994.40 and 643,133.60 is: 964,700.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,329.60 : 1,318,994.40 = 643,133.60 : x
  2. Step 2: Convert to fraction form
    879,329.60/1,318,994.40 = 643,133.60/x
  3. Step 3: Cross multiply
    879,329.60x = 1,318,994.40 × 643,133.60
  4. Step 4: Simplify right side
    879,329.60x = 848,289,616,851.84
  5. Step 5: Solve for x
    x = 848,289,616,851.84/879,329.60
  6. Step 6: Final answer
    x = 964,700.40

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Similar ratio
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1.5x scale

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.