Home / 1,421,521.86-1,961,510.67-912,913.14

Finding the Fourth Proportional to 1,421,521.86, 1,961,510.67 and 912,913.14

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Solution

The fourth proportional to 1,421,521.86, 1,961,510.67 and 912,913.14 is: 1,259,698.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,521.86 : 1,961,510.67 = 912,913.14 : x
  2. Step 2: Convert to fraction form
    1,421,521.86/1,961,510.67 = 912,913.14/x
  3. Step 3: Cross multiply
    1,421,521.86x = 1,961,510.67 × 912,913.14
  4. Step 4: Simplify right side
    1,421,521.86x = 1,790,688,864,893.20
  5. Step 5: Solve for x
    x = 1,790,688,864,893.20/1,421,521.86
  6. Step 6: Final answer
    x = 1,259,698.44

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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.