Home / 1,387,260-1,914,574.32-783,686.88

Finding the Fourth Proportional to 1,387,260, 1,914,574.32 and 783,686.88

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Solution

The fourth proportional to 1,387,260, 1,914,574.32 and 783,686.88 is: 1,081,575.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,260 : 1,914,574.32 = 783,686.88 : x
  2. Step 2: Convert to fraction form
    1,387,260/1,914,574.32 = 783,686.88/x
  3. Step 3: Cross multiply
    1,387,260x = 1,914,574.32 × 783,686.88
  4. Step 4: Simplify right side
    1,387,260x = 1,500,426,775,368.92
  5. Step 5: Solve for x
    x = 1,500,426,775,368.92/1,387,260
  6. Step 6: Final answer
    x = 1,081,575.75

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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.