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Finding the Fourth Proportional to 551,889,442.33, 761,603,931.74 and 313,734,639.38

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Solution

The fourth proportional to 551,889,442.33, 761,603,931.74 and 313,734,639.38 is: 432,951,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,889,442.33 : 761,603,931.74 = 313,734,639.38 : x
  2. Step 2: Convert to fraction form
    551,889,442.33/761,603,931.74 = 313,734,639.38/x
  3. Step 3: Cross multiply
    551,889,442.33x = 761,603,931.74 × 313,734,639.38
  4. Step 4: Simplify right side
    551,889,442.33x = 238,941,534,871,815,328
  5. Step 5: Solve for x
    x = 238,941,534,871,815,328/551,889,442.33
  6. Step 6: Final answer
    x = 432,951,813.44

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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.