Home / 1,312,606.80-1,969,128.90-513,914.40

Finding the Fourth Proportional to 1,312,606.80, 1,969,128.90 and 513,914.40

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Solution

The fourth proportional to 1,312,606.80, 1,969,128.90 and 513,914.40 is: 770,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,606.80 : 1,969,128.90 = 513,914.40 : x
  2. Step 2: Convert to fraction form
    1,312,606.80/1,969,128.90 = 513,914.40/x
  3. Step 3: Cross multiply
    1,312,606.80x = 1,969,128.90 × 513,914.40
  4. Step 4: Simplify right side
    1,312,606.80x = 1,011,963,697,166.16
  5. Step 5: Solve for x
    x = 1,011,963,697,166.16/1,312,606.80
  6. Step 6: Final answer
    x = 770,957.23

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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.