Home / 630,439,715.40-945,659,573.10-388,575,011.40

Finding the Fourth Proportional to 630,439,715.40, 945,659,573.10 and 388,575,011.40

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Solution

The fourth proportional to 630,439,715.40, 945,659,573.10 and 388,575,011.40 is: 582,862,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,439,715.40 : 945,659,573.10 = 388,575,011.40 : x
  2. Step 2: Convert to fraction form
    630,439,715.40/945,659,573.10 = 388,575,011.40/x
  3. Step 3: Cross multiply
    630,439,715.40x = 945,659,573.10 × 388,575,011.40
  4. Step 4: Simplify right side
    630,439,715.40x = 367,459,679,397,851,648
  5. Step 5: Solve for x
    x = 367,459,679,397,851,648/630,439,715.40
  6. Step 6: Final answer
    x = 582,862,517.10

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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.