Home / 859,705.60-1,289,558.40-434,552.80

Finding the Fourth Proportional to 859,705.60, 1,289,558.40 and 434,552.80

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Solution

The fourth proportional to 859,705.60, 1,289,558.40 and 434,552.80 is: 651,829.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,705.60 : 1,289,558.40 = 434,552.80 : x
  2. Step 2: Convert to fraction form
    859,705.60/1,289,558.40 = 434,552.80/x
  3. Step 3: Cross multiply
    859,705.60x = 1,289,558.40 × 434,552.80
  4. Step 4: Simplify right side
    859,705.60x = 560,381,213,483.52
  5. Step 5: Solve for x
    x = 560,381,213,483.52/859,705.60
  6. Step 6: Final answer
    x = 651,829.20

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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.