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Finding the Fourth Proportional to 708,317.52, 977,449.44 and 386,020.80

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Solution

The fourth proportional to 708,317.52, 977,449.44 and 386,020.80 is: 532,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,317.52 : 977,449.44 = 386,020.80 : x
  2. Step 2: Convert to fraction form
    708,317.52/977,449.44 = 386,020.80/x
  3. Step 3: Cross multiply
    708,317.52x = 977,449.44 × 386,020.80
  4. Step 4: Simplify right side
    708,317.52x = 377,315,814,788.35
  5. Step 5: Solve for x
    x = 377,315,814,788.35/708,317.52
  6. Step 6: Final answer
    x = 532,693.04

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Double scale
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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.