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Finding the Fourth Proportional to 458,544.40, 687,816.60 and 369,970.90

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Solution

The fourth proportional to 458,544.40, 687,816.60 and 369,970.90 is: 554,956.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,544.40 : 687,816.60 = 369,970.90 : x
  2. Step 2: Convert to fraction form
    458,544.40/687,816.60 = 369,970.90/x
  3. Step 3: Cross multiply
    458,544.40x = 687,816.60 × 369,970.90
  4. Step 4: Simplify right side
    458,544.40x = 254,472,126,536.94
  5. Step 5: Solve for x
    x = 254,472,126,536.94/458,544.40
  6. Step 6: Final answer
    x = 554,956.35

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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.