Home / 1,421,725.76-1,961,981.64-777,148.52

Finding the Fourth Proportional to 1,421,725.76, 1,961,981.64 and 777,148.52

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Solution

The fourth proportional to 1,421,725.76, 1,961,981.64 and 777,148.52 is: 1,072,465.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,725.76 : 1,961,981.64 = 777,148.52 : x
  2. Step 2: Convert to fraction form
    1,421,725.76/1,961,981.64 = 777,148.52/x
  3. Step 3: Cross multiply
    1,421,725.76x = 1,961,981.64 × 777,148.52
  4. Step 4: Simplify right side
    1,421,725.76x = 1,524,751,127,793.17
  5. Step 5: Solve for x
    x = 1,524,751,127,793.17/1,421,725.76
  6. Step 6: Final answer
    x = 1,072,465.01

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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.