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Finding the Fourth Proportional to 571,318,700.80, 856,978,051.20 and 298,773,011.20

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Solution

The fourth proportional to 571,318,700.80, 856,978,051.20 and 298,773,011.20 is: 448,159,516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,318,700.80 : 856,978,051.20 = 298,773,011.20 : x
  2. Step 2: Convert to fraction form
    571,318,700.80/856,978,051.20 = 298,773,011.20/x
  3. Step 3: Cross multiply
    571,318,700.80x = 856,978,051.20 × 298,773,011.20
  4. Step 4: Simplify right side
    571,318,700.80x = 256,041,912,889,331,776
  5. Step 5: Solve for x
    x = 256,041,912,889,331,776/571,318,700.80
  6. Step 6: Final answer
    x = 448,159,516.80

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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.