Home / 680,931.80-1,021,397.70-415,211.30

Finding the Fourth Proportional to 680,931.80, 1,021,397.70 and 415,211.30

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Solution

The fourth proportional to 680,931.80, 1,021,397.70 and 415,211.30 is: 622,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,931.80 : 1,021,397.70 = 415,211.30 : x
  2. Step 2: Convert to fraction form
    680,931.80/1,021,397.70 = 415,211.30/x
  3. Step 3: Cross multiply
    680,931.80x = 1,021,397.70 × 415,211.30
  4. Step 4: Simplify right side
    680,931.80x = 424,095,866,834.01
  5. Step 5: Solve for x
    x = 424,095,866,834.01/680,931.80
  6. Step 6: Final answer
    x = 622,816.95

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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.