Home / 1,386,521.25-1,913,208.86-774,598.04

Finding the Fourth Proportional to 1,386,521.25, 1,913,208.86 and 774,598.04

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Solution

The fourth proportional to 1,386,521.25, 1,913,208.86 and 774,598.04 is: 1,068,838.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,521.25 : 1,913,208.86 = 774,598.04 : x
  2. Step 2: Convert to fraction form
    1,386,521.25/1,913,208.86 = 774,598.04/x
  3. Step 3: Cross multiply
    1,386,521.25x = 1,913,208.86 × 774,598.04
  4. Step 4: Simplify right side
    1,386,521.25x = 1,481,967,832,611.62
  5. Step 5: Solve for x
    x = 1,481,967,832,611.62/1,386,521.25
  6. Step 6: Final answer
    x = 1,068,838.89

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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.