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Finding the Fourth Proportional to 564,323,187.84, 778,723,003.80 and 316,756,712.40

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Solution

The fourth proportional to 564,323,187.84, 778,723,003.80 and 316,756,712.40 is: 437,100,129.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,323,187.84 : 778,723,003.80 = 316,756,712.40 : x
  2. Step 2: Convert to fraction form
    564,323,187.84/778,723,003.80 = 316,756,712.40/x
  3. Step 3: Cross multiply
    564,323,187.84x = 778,723,003.80 × 316,756,712.40
  4. Step 4: Simplify right side
    564,323,187.84x = 246,665,738,553,940,672
  5. Step 5: Solve for x
    x = 246,665,738,553,940,672/564,323,187.84
  6. Step 6: Final answer
    x = 437,100,129.62

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