Home / 817,285.60-1,225,345.20-367,638.40

Finding the Fourth Proportional to 817,285.60, 1,225,345.20 and 367,638.40

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Solution

The fourth proportional to 817,285.60, 1,225,345.20 and 367,638.40 is: 551,195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,285.60 : 1,225,345.20 = 367,638.40 : x
  2. Step 2: Convert to fraction form
    817,285.60/1,225,345.20 = 367,638.40/x
  3. Step 3: Cross multiply
    817,285.60x = 1,225,345.20 × 367,638.40
  4. Step 4: Simplify right side
    817,285.60x = 450,483,948,775.68
  5. Step 5: Solve for x
    x = 450,483,948,775.68/817,285.60
  6. Step 6: Final answer
    x = 551,195.26

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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.