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Finding the Fourth Proportional to 578,771,978.40, 869,165,737.20 and 306,674,186.40

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Solution

The fourth proportional to 578,771,978.40, 869,165,737.20 and 306,674,186.40 is: 460,545,266.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,771,978.40 : 869,165,737.20 = 306,674,186.40 : x
  2. Step 2: Convert to fraction form
    578,771,978.40/869,165,737.20 = 306,674,186.40/x
  3. Step 3: Cross multiply
    578,771,978.40x = 869,165,737.20 × 306,674,186.40
  4. Step 4: Simplify right side
    578,771,978.40x = 266,550,695,302,566,208
  5. Step 5: Solve for x
    x = 266,550,695,302,566,208/578,771,978.40
  6. Step 6: Final answer
    x = 460,545,266.96

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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.