Home / 1,020,721.16-1,531,303.14-310,730.78

Finding the Fourth Proportional to 1,020,721.16, 1,531,303.14 and 310,730.78

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Solution

The fourth proportional to 1,020,721.16, 1,531,303.14 and 310,730.78 is: 466,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,721.16 : 1,531,303.14 = 310,730.78 : x
  2. Step 2: Convert to fraction form
    1,020,721.16/1,531,303.14 = 310,730.78/x
  3. Step 3: Cross multiply
    1,020,721.16x = 1,531,303.14 × 310,730.78
  4. Step 4: Simplify right side
    1,020,721.16x = 475,823,019,108.65
  5. Step 5: Solve for x
    x = 475,823,019,108.65/1,020,721.16
  6. Step 6: Final answer
    x = 466,163.57

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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.