Home / 442,743,138.40-662,323,117.20-388,995,426.40

Finding the Fourth Proportional to 442,743,138.40, 662,323,117.20 and 388,995,426.40

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Solution

The fourth proportional to 442,743,138.40, 662,323,117.20 and 388,995,426.40 is: 581,919,042.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,743,138.40 : 662,323,117.20 = 388,995,426.40 : x
  2. Step 2: Convert to fraction form
    442,743,138.40/662,323,117.20 = 388,995,426.40/x
  3. Step 3: Cross multiply
    442,743,138.40x = 662,323,117.20 × 388,995,426.40
  4. Step 4: Simplify right side
    442,743,138.40x = 257,640,663,389,791,168
  5. Step 5: Solve for x
    x = 257,640,663,389,791,168/442,743,138.40
  6. Step 6: Final answer
    x = 581,919,042.99

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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.