Home / 939,864.57-1,296,978.21-510,135.45

Finding the Fourth Proportional to 939,864.57, 1,296,978.21 and 510,135.45

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Solution

The fourth proportional to 939,864.57, 1,296,978.21 and 510,135.45 is: 703,967.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,864.57 : 1,296,978.21 = 510,135.45 : x
  2. Step 2: Convert to fraction form
    939,864.57/1,296,978.21 = 510,135.45/x
  3. Step 3: Cross multiply
    939,864.57x = 1,296,978.21 × 510,135.45
  4. Step 4: Simplify right side
    939,864.57x = 661,634,562,798.55
  5. Step 5: Solve for x
    x = 661,634,562,798.55/939,864.57
  6. Step 6: Final answer
    x = 703,967.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.