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Finding the Fourth Proportional to 425,360.39, 587,038.71 and 317,743.60

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Solution

The fourth proportional to 425,360.39, 587,038.71 and 317,743.60 is: 438,517.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,360.39 : 587,038.71 = 317,743.60 : x
  2. Step 2: Convert to fraction form
    425,360.39/587,038.71 = 317,743.60/x
  3. Step 3: Cross multiply
    425,360.39x = 587,038.71 × 317,743.60
  4. Step 4: Simplify right side
    425,360.39x = 186,527,793,054.76
  5. Step 5: Solve for x
    x = 186,527,793,054.76/425,360.39
  6. Step 6: Final answer
    x = 438,517.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.