Home / 1,865,721.80-2,798,598.38-517,989.51

Finding the Fourth Proportional to 1,865,721.80, 2,798,598.38 and 517,989.51

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Solution

The fourth proportional to 1,865,721.80, 2,798,598.38 and 517,989.51 is: 776,988.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865,721.80 : 2,798,598.38 = 517,989.51 : x
  2. Step 2: Convert to fraction form
    1,865,721.80/2,798,598.38 = 517,989.51/x
  3. Step 3: Cross multiply
    1,865,721.80x = 2,798,598.38 × 517,989.51
  4. Step 4: Simplify right side
    1,865,721.80x = 1,449,644,600,953.05
  5. Step 5: Solve for x
    x = 1,449,644,600,953.05/1,865,721.80
  6. Step 6: Final answer
    x = 776,988.62

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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.