Home / 816,421.60-1,224,632.40-416,929.60

Finding the Fourth Proportional to 816,421.60, 1,224,632.40 and 416,929.60

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Solution

The fourth proportional to 816,421.60, 1,224,632.40 and 416,929.60 is: 625,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,421.60 : 1,224,632.40 = 416,929.60 : x
  2. Step 2: Convert to fraction form
    816,421.60/1,224,632.40 = 416,929.60/x
  3. Step 3: Cross multiply
    816,421.60x = 1,224,632.40 × 416,929.60
  4. Step 4: Simplify right side
    816,421.60x = 510,585,496,679.04
  5. Step 5: Solve for x
    x = 510,585,496,679.04/816,421.60
  6. Step 6: Final answer
    x = 625,394.40

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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.