Home / 811,288.88-1,214,442.15-510,360.45

Finding the Fourth Proportional to 811,288.88, 1,214,442.15 and 510,360.45

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Solution

The fourth proportional to 811,288.88, 1,214,442.15 and 510,360.45 is: 763,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,288.88 : 1,214,442.15 = 510,360.45 : x
  2. Step 2: Convert to fraction form
    811,288.88/1,214,442.15 = 510,360.45/x
  3. Step 3: Cross multiply
    811,288.88x = 1,214,442.15 × 510,360.45
  4. Step 4: Simplify right side
    811,288.88x = 619,803,242,172.97
  5. Step 5: Solve for x
    x = 619,803,242,172.97/811,288.88
  6. Step 6: Final answer
    x = 763,973.55

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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.