Home / 820,406.40-1,132,659.80-562,706.72

Finding the Fourth Proportional to 820,406.40, 1,132,659.80 and 562,706.72

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Solution

The fourth proportional to 820,406.40, 1,132,659.80 and 562,706.72 is: 776,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,406.40 : 1,132,659.80 = 562,706.72 : x
  2. Step 2: Convert to fraction form
    820,406.40/1,132,659.80 = 562,706.72/x
  3. Step 3: Cross multiply
    820,406.40x = 1,132,659.80 × 562,706.72
  4. Step 4: Simplify right side
    820,406.40x = 637,355,285,172.27
  5. Step 5: Solve for x
    x = 637,355,285,172.27/820,406.40
  6. Step 6: Final answer
    x = 776,877.51

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1.5x scale

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.