Home / 689,706.53-1,034,547.71-310,358.77

Finding the Fourth Proportional to 689,706.53, 1,034,547.71 and 310,358.77

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Solution

The fourth proportional to 689,706.53, 1,034,547.71 and 310,358.77 is: 465,532.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,706.53 : 1,034,547.71 = 310,358.77 : x
  2. Step 2: Convert to fraction form
    689,706.53/1,034,547.71 = 310,358.77/x
  3. Step 3: Cross multiply
    689,706.53x = 1,034,547.71 × 310,358.77
  4. Step 4: Simplify right side
    689,706.53x = 321,080,950,643.75
  5. Step 5: Solve for x
    x = 321,080,950,643.75/689,706.53
  6. Step 6: Final answer
    x = 465,532.71

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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.