Home / 442,743,139.40-662,323,118.70-388,995,427.40

Finding the Fourth Proportional to 442,743,139.40, 662,323,118.70 and 388,995,427.40

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Solution

The fourth proportional to 442,743,139.40, 662,323,118.70 and 388,995,427.40 is: 581,919,044.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,743,139.40 : 662,323,118.70 = 388,995,427.40 : x
  2. Step 2: Convert to fraction form
    442,743,139.40/662,323,118.70 = 388,995,427.40/x
  3. Step 3: Cross multiply
    442,743,139.40x = 662,323,118.70 × 388,995,427.40
  4. Step 4: Simplify right side
    442,743,139.40x = 257,640,664,635,607,424
  5. Step 5: Solve for x
    x = 257,640,664,635,607,424/442,743,139.40
  6. Step 6: Final answer
    x = 581,919,044.49

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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.