Home / 680,931.30-1,021,396.95-415,210.80

Finding the Fourth Proportional to 680,931.30, 1,021,396.95 and 415,210.80

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Solution

The fourth proportional to 680,931.30, 1,021,396.95 and 415,210.80 is: 622,816.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,931.30 : 1,021,396.95 = 415,210.80 : x
  2. Step 2: Convert to fraction form
    680,931.30/1,021,396.95 = 415,210.80/x
  3. Step 3: Cross multiply
    680,931.30x = 1,021,396.95 × 415,210.80
  4. Step 4: Simplify right side
    680,931.30x = 424,095,044,727.06
  5. Step 5: Solve for x
    x = 424,095,044,727.06/680,931.30
  6. Step 6: Final answer
    x = 622,816.20

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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.