Home / 856,813.60-1,285,220.40-436,909.60

Finding the Fourth Proportional to 856,813.60, 1,285,220.40 and 436,909.60

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Solution

The fourth proportional to 856,813.60, 1,285,220.40 and 436,909.60 is: 655,364.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,813.60 : 1,285,220.40 = 436,909.60 : x
  2. Step 2: Convert to fraction form
    856,813.60/1,285,220.40 = 436,909.60/x
  3. Step 3: Cross multiply
    856,813.60x = 1,285,220.40 × 436,909.60
  4. Step 4: Simplify right side
    856,813.60x = 561,525,130,875.84
  5. Step 5: Solve for x
    x = 561,525,130,875.84/856,813.60
  6. Step 6: Final answer
    x = 655,364.40

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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.