Home / 668,719.90-1,003,079.85-385,284.70

Finding the Fourth Proportional to 668,719.90, 1,003,079.85 and 385,284.70

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Solution

The fourth proportional to 668,719.90, 1,003,079.85 and 385,284.70 is: 577,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,719.90 : 1,003,079.85 = 385,284.70 : x
  2. Step 2: Convert to fraction form
    668,719.90/1,003,079.85 = 385,284.70/x
  3. Step 3: Cross multiply
    668,719.90x = 1,003,079.85 × 385,284.70
  4. Step 4: Simplify right side
    668,719.90x = 386,471,319,083.30
  5. Step 5: Solve for x
    x = 386,471,319,083.30/668,719.90
  6. Step 6: Final answer
    x = 577,927.05

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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.