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Finding the Fourth Proportional to 620,775.48, 931,169.70 and 496,903.80

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Solution

The fourth proportional to 620,775.48, 931,169.70 and 496,903.80 is: 745,360.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,775.48 : 931,169.70 = 496,903.80 : x
  2. Step 2: Convert to fraction form
    620,775.48/931,169.70 = 496,903.80/x
  3. Step 3: Cross multiply
    620,775.48x = 931,169.70 × 496,903.80
  4. Step 4: Simplify right side
    620,775.48x = 462,701,762,374.86
  5. Step 5: Solve for x
    x = 462,701,762,374.86/620,775.48
  6. Step 6: Final answer
    x = 745,360.89

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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.