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Finding the Fourth Proportional to 708,589.54, 977,544.92 and 450,328.07

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Solution

The fourth proportional to 708,589.54, 977,544.92 and 450,328.07 is: 621,256.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,589.54 : 977,544.92 = 450,328.07 : x
  2. Step 2: Convert to fraction form
    708,589.54/977,544.92 = 450,328.07/x
  3. Step 3: Cross multiply
    708,589.54x = 977,544.92 × 450,328.07
  4. Step 4: Simplify right side
    708,589.54x = 440,215,920,893.78
  5. Step 5: Solve for x
    x = 440,215,920,893.78/708,589.54
  6. Step 6: Final answer
    x = 621,256.59

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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.