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Finding the Fourth Proportional to 615,310.80, 859,335.60 and 615,310.80

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Solution

The fourth proportional to 615,310.80, 859,335.60 and 615,310.80 is: 859,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,310.80 : 859,335.60 = 615,310.80 : x
  2. Step 2: Convert to fraction form
    615,310.80/859,335.60 = 615,310.80/x
  3. Step 3: Cross multiply
    615,310.80x = 859,335.60 × 615,310.80
  4. Step 4: Simplify right side
    615,310.80x = 528,758,475,504.48
  5. Step 5: Solve for x
    x = 528,758,475,504.48/615,310.80
  6. Step 6: Final answer
    x = 859,335.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.