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Finding the Fourth Proportional to 560,545.64, 773,484.90 and 318,858.92

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Solution

The fourth proportional to 560,545.64, 773,484.90 and 318,858.92 is: 439,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,545.64 : 773,484.90 = 318,858.92 : x
  2. Step 2: Convert to fraction form
    560,545.64/773,484.90 = 318,858.92/x
  3. Step 3: Cross multiply
    560,545.64x = 773,484.90 × 318,858.92
  4. Step 4: Simplify right side
    560,545.64x = 246,632,559,850.31
  5. Step 5: Solve for x
    x = 246,632,559,850.31/560,545.64
  6. Step 6: Final answer
    x = 439,986.58

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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.