Home / 718,962,146.16-992,165,599.32-388,937,193.84

Finding the Fourth Proportional to 718,962,146.16, 992,165,599.32 and 388,937,193.84

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Solution

The fourth proportional to 718,962,146.16, 992,165,599.32 and 388,937,193.84 is: 536,732,157.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,962,146.16 : 992,165,599.32 = 388,937,193.84 : x
  2. Step 2: Convert to fraction form
    718,962,146.16/992,165,599.32 = 388,937,193.84/x
  3. Step 3: Cross multiply
    718,962,146.16x = 992,165,599.32 × 388,937,193.84
  4. Step 4: Simplify right side
    718,962,146.16x = 385,890,104,024,102,592
  5. Step 5: Solve for x
    x = 385,890,104,024,102,592/718,962,146.16
  6. Step 6: Final answer
    x = 536,732,157.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.