Home / 743,856.40-1,115,784.60-477,917.20

Finding the Fourth Proportional to 743,856.40, 1,115,784.60 and 477,917.20

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Solution

The fourth proportional to 743,856.40, 1,115,784.60 and 477,917.20 is: 716,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,856.40 : 1,115,784.60 = 477,917.20 : x
  2. Step 2: Convert to fraction form
    743,856.40/1,115,784.60 = 477,917.20/x
  3. Step 3: Cross multiply
    743,856.40x = 1,115,784.60 × 477,917.20
  4. Step 4: Simplify right side
    743,856.40x = 533,252,651,835.12
  5. Step 5: Solve for x
    x = 533,252,651,835.12/743,856.40
  6. Step 6: Final answer
    x = 716,875.80

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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.