Home / 719,643.60-1,078,774.20-559,630.80

Finding the Fourth Proportional to 719,643.60, 1,078,774.20 and 559,630.80

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Solution

The fourth proportional to 719,643.60, 1,078,774.20 and 559,630.80 is: 838,908.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,643.60 : 1,078,774.20 = 559,630.80 : x
  2. Step 2: Convert to fraction form
    719,643.60/1,078,774.20 = 559,630.80/x
  3. Step 3: Cross multiply
    719,643.60x = 1,078,774.20 × 559,630.80
  4. Step 4: Simplify right side
    719,643.60x = 603,715,268,565.36
  5. Step 5: Solve for x
    x = 603,715,268,565.36/719,643.60
  6. Step 6: Final answer
    x = 838,908.69

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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.