Home / 1,272,457.04-1,908,635.70-431,008.76

Finding the Fourth Proportional to 1,272,457.04, 1,908,635.70 and 431,008.76

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Solution

The fourth proportional to 1,272,457.04, 1,908,635.70 and 431,008.76 is: 646,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,457.04 : 1,908,635.70 = 431,008.76 : x
  2. Step 2: Convert to fraction form
    1,272,457.04/1,908,635.70 = 431,008.76/x
  3. Step 3: Cross multiply
    1,272,457.04x = 1,908,635.70 × 431,008.76
  4. Step 4: Simplify right side
    1,272,457.04x = 822,638,706,348.73
  5. Step 5: Solve for x
    x = 822,638,706,348.73/1,272,457.04
  6. Step 6: Final answer
    x = 646,496.25

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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.