Home / 679,788,499.68-1,015,812,896.64-510,423,157.44

Finding the Fourth Proportional to 679,788,499.68, 1,015,812,896.64 and 510,423,157.44

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Solution

The fourth proportional to 679,788,499.68, 1,015,812,896.64 and 510,423,157.44 is: 762,729,034.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,788,499.68 : 1,015,812,896.64 = 510,423,157.44 : x
  2. Step 2: Convert to fraction form
    679,788,499.68/1,015,812,896.64 = 510,423,157.44/x
  3. Step 3: Cross multiply
    679,788,499.68x = 1,015,812,896.64 × 510,423,157.44
  4. Step 4: Simplify right side
    679,788,499.68x = 518,494,426,071,261,184
  5. Step 5: Solve for x
    x = 518,494,426,071,261,184/679,788,499.68
  6. Step 6: Final answer
    x = 762,729,034.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.