Home / 708,689.44-977,973.66-386,405.80

Finding the Fourth Proportional to 708,689.44, 977,973.66 and 386,405.80

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Solution

The fourth proportional to 708,689.44, 977,973.66 and 386,405.80 is: 533,230.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,689.44 : 977,973.66 = 386,405.80 : x
  2. Step 2: Convert to fraction form
    708,689.44/977,973.66 = 386,405.80/x
  3. Step 3: Cross multiply
    708,689.44x = 977,973.66 × 386,405.80
  4. Step 4: Simplify right side
    708,689.44x = 377,894,694,471.23
  5. Step 5: Solve for x
    x = 377,894,694,471.23/708,689.44
  6. Step 6: Final answer
    x = 533,230.32

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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.