Home / 866,378.13-1,298,432.30-416,203.32

Finding the Fourth Proportional to 866,378.13, 1,298,432.30 and 416,203.32

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Solution

The fourth proportional to 866,378.13, 1,298,432.30 and 416,203.32 is: 623,759.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,378.13 : 1,298,432.30 = 416,203.32 : x
  2. Step 2: Convert to fraction form
    866,378.13/1,298,432.30 = 416,203.32/x
  3. Step 3: Cross multiply
    866,378.13x = 1,298,432.30 × 416,203.32
  4. Step 4: Simplify right side
    866,378.13x = 540,411,835,095.74
  5. Step 5: Solve for x
    x = 540,411,835,095.74/866,378.13
  6. Step 6: Final answer
    x = 623,759.78

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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.