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Finding the Fourth Proportional to 618,865,419.84, 928,305,420.80 and 245,464,360

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Solution

The fourth proportional to 618,865,419.84, 928,305,420.80 and 245,464,360 is: 368,199,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,865,419.84 : 928,305,420.80 = 245,464,360 : x
  2. Step 2: Convert to fraction form
    618,865,419.84/928,305,420.80 = 245,464,360/x
  3. Step 3: Cross multiply
    618,865,419.84x = 928,305,420.80 × 245,464,360
  4. Step 4: Simplify right side
    618,865,419.84x = 227,865,896,001,202,688
  5. Step 5: Solve for x
    x = 227,865,896,001,202,688/618,865,419.84
  6. Step 6: Final answer
    x = 368,199,431.89

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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.