Home / 1,386,065.52-1,912,749.84-774,226.80

Finding the Fourth Proportional to 1,386,065.52, 1,912,749.84 and 774,226.80

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Solution

The fourth proportional to 1,386,065.52, 1,912,749.84 and 774,226.80 is: 1,068,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,065.52 : 1,912,749.84 = 774,226.80 : x
  2. Step 2: Convert to fraction form
    1,386,065.52/1,912,749.84 = 774,226.80/x
  3. Step 3: Cross multiply
    1,386,065.52x = 1,912,749.84 × 774,226.80
  4. Step 4: Simplify right side
    1,386,065.52x = 1,480,902,187,823.71
  5. Step 5: Solve for x
    x = 1,480,902,187,823.71/1,386,065.52
  6. Step 6: Final answer
    x = 1,068,421.49

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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.