Home / 813,962.80-1,220,777.91-308,349.46

Finding the Fourth Proportional to 813,962.80, 1,220,777.91 and 308,349.46

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Solution

The fourth proportional to 813,962.80, 1,220,777.91 and 308,349.46 is: 462,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,962.80 : 1,220,777.91 = 308,349.46 : x
  2. Step 2: Convert to fraction form
    813,962.80/1,220,777.91 = 308,349.46/x
  3. Step 3: Cross multiply
    813,962.80x = 1,220,777.91 × 308,349.46
  4. Step 4: Simplify right side
    813,962.80x = 376,426,209,328.43
  5. Step 5: Solve for x
    x = 376,426,209,328.43/813,962.80
  6. Step 6: Final answer
    x = 462,461.20

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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.