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Finding the Fourth Proportional to 656,430.52, 905,873.40 and 354,624.52

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Solution

The fourth proportional to 656,430.52, 905,873.40 and 354,624.52 is: 489,381.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,430.52 : 905,873.40 = 354,624.52 : x
  2. Step 2: Convert to fraction form
    656,430.52/905,873.40 = 354,624.52/x
  3. Step 3: Cross multiply
    656,430.52x = 905,873.40 × 354,624.52
  4. Step 4: Simplify right side
    656,430.52x = 321,244,919,655.77
  5. Step 5: Solve for x
    x = 321,244,919,655.77/656,430.52
  6. Step 6: Final answer
    x = 489,381.45

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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.