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Finding the Fourth Proportional to 560,445.47, 773,431.80 and 318,762.83

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Solution

The fourth proportional to 560,445.47, 773,431.80 and 318,762.83 is: 439,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,445.47 : 773,431.80 = 318,762.83 : x
  2. Step 2: Convert to fraction form
    560,445.47/773,431.80 = 318,762.83/x
  3. Step 3: Cross multiply
    560,445.47x = 773,431.80 × 318,762.83
  4. Step 4: Simplify right side
    560,445.47x = 246,541,309,379.99
  5. Step 5: Solve for x
    x = 246,541,309,379.99/560,445.47
  6. Step 6: Final answer
    x = 439,902.40

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1.5x scale

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.