Home / 1,211,784,810.30-1,817,005,369.05-521,574,608.70

Finding the Fourth Proportional to 1,211,784,810.30, 1,817,005,369.05 and 521,574,608.70

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Solution

The fourth proportional to 1,211,784,810.30, 1,817,005,369.05 and 521,574,608.70 is: 782,072,737.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,784,810.30 : 1,817,005,369.05 = 521,574,608.70 : x
  2. Step 2: Convert to fraction form
    1,211,784,810.30/1,817,005,369.05 = 521,574,608.70/x
  3. Step 3: Cross multiply
    1,211,784,810.30x = 1,817,005,369.05 × 521,574,608.70
  4. Step 4: Simplify right side
    1,211,784,810.30x = 947,703,864,368,052,736
  5. Step 5: Solve for x
    x = 947,703,864,368,052,736/1,211,784,810.30
  6. Step 6: Final answer
    x = 782,072,737.93

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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.