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Finding the Fourth Proportional to 626,697.48, 864,007.35 and 498,065.46

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Solution

The fourth proportional to 626,697.48, 864,007.35 and 498,065.46 is: 686,666.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,697.48 : 864,007.35 = 498,065.46 : x
  2. Step 2: Convert to fraction form
    626,697.48/864,007.35 = 498,065.46/x
  3. Step 3: Cross multiply
    626,697.48x = 864,007.35 × 498,065.46
  4. Step 4: Simplify right side
    626,697.48x = 430,332,218,221.13
  5. Step 5: Solve for x
    x = 430,332,218,221.13/626,697.48
  6. Step 6: Final answer
    x = 686,666.58

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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.