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Finding the Fourth Proportional to 615,672.80, 859,842.40 and 615,672.80

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Solution

The fourth proportional to 615,672.80, 859,842.40 and 615,672.80 is: 859,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,672.80 : 859,842.40 = 615,672.80 : x
  2. Step 2: Convert to fraction form
    615,672.80/859,842.40 = 615,672.80/x
  3. Step 3: Cross multiply
    615,672.80x = 859,842.40 × 615,672.80
  4. Step 4: Simplify right side
    615,672.80x = 529,381,577,966.72
  5. Step 5: Solve for x
    x = 529,381,577,966.72/615,672.80
  6. Step 6: Final answer
    x = 859,842.40

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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.