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Finding the Fourth Proportional to 1,256,897,899.89, 1,734,388,614.99 and 774,013,085.91

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Solution

The fourth proportional to 1,256,897,899.89, 1,734,388,614.99 and 774,013,085.91 is: 1,068,057,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,897,899.89 : 1,734,388,614.99 = 774,013,085.91 : x
  2. Step 2: Convert to fraction form
    1,256,897,899.89/1,734,388,614.99 = 774,013,085.91/x
  3. Step 3: Cross multiply
    1,256,897,899.89x = 1,734,388,614.99 × 774,013,085.91
  4. Step 4: Simplify right side
    1,256,897,899.89x = 1,342,439,484,055,580,672
  5. Step 5: Solve for x
    x = 1,342,439,484,055,580,672/1,256,897,899.89
  6. Step 6: Final answer
    x = 1,068,057,703.15

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Why These Related Problems?

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