Home / 678,180,211.92-1,015,908,264.80-309,207,614.64

Finding the Fourth Proportional to 678,180,211.92, 1,015,908,264.80 and 309,207,614.64

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Solution

The fourth proportional to 678,180,211.92, 1,015,908,264.80 and 309,207,614.64 is: 463,190,411.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,180,211.92 : 1,015,908,264.80 = 309,207,614.64 : x
  2. Step 2: Convert to fraction form
    678,180,211.92/1,015,908,264.80 = 309,207,614.64/x
  3. Step 3: Cross multiply
    678,180,211.92x = 1,015,908,264.80 × 309,207,614.64
  4. Step 4: Simplify right side
    678,180,211.92x = 314,126,571,251,869,440
  5. Step 5: Solve for x
    x = 314,126,571,251,869,440/678,180,211.92
  6. Step 6: Final answer
    x = 463,190,411.24

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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.