Home / 678,315.60-1,017,617.32-257,582.16

Finding the Fourth Proportional to 678,315.60, 1,017,617.32 and 257,582.16

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Solution

The fourth proportional to 678,315.60, 1,017,617.32 and 257,582.16 is: 386,427.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,315.60 : 1,017,617.32 = 257,582.16 : x
  2. Step 2: Convert to fraction form
    678,315.60/1,017,617.32 = 257,582.16/x
  3. Step 3: Cross multiply
    678,315.60x = 1,017,617.32 × 257,582.16
  4. Step 4: Simplify right side
    678,315.60x = 262,120,067,339.01
  5. Step 5: Solve for x
    x = 262,120,067,339.01/678,315.60
  6. Step 6: Final answer
    x = 386,427.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.