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Finding the Fourth Proportional to 615,083,133.60, 921,281,007.60 and 477,690,544.80

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Solution

The fourth proportional to 615,083,133.60, 921,281,007.60 and 477,690,544.80 is: 715,492,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,083,133.60 : 921,281,007.60 = 477,690,544.80 : x
  2. Step 2: Convert to fraction form
    615,083,133.60/921,281,007.60 = 477,690,544.80/x
  3. Step 3: Cross multiply
    615,083,133.60x = 921,281,007.60 × 477,690,544.80
  4. Step 4: Simplify right side
    615,083,133.60x = 440,087,226,434,336,960
  5. Step 5: Solve for x
    x = 440,087,226,434,336,960/615,083,133.60
  6. Step 6: Final answer
    x = 715,492,268.27

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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.