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Finding the Fourth Proportional to 637,259,715.60, 955,889,573.40 and 439,988,816.40

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Solution

The fourth proportional to 637,259,715.60, 955,889,573.40 and 439,988,816.40 is: 659,983,224.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,259,715.60 : 955,889,573.40 = 439,988,816.40 : x
  2. Step 2: Convert to fraction form
    637,259,715.60/955,889,573.40 = 439,988,816.40/x
  3. Step 3: Cross multiply
    637,259,715.60x = 955,889,573.40 × 439,988,816.40
  4. Step 4: Simplify right side
    637,259,715.60x = 420,580,722,009,366,912
  5. Step 5: Solve for x
    x = 420,580,722,009,366,912/637,259,715.60
  6. Step 6: Final answer
    x = 659,983,224.60

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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.