Home / 780,711,156.32-1,077,375,018.96-423,478,038.76

Finding the Fourth Proportional to 780,711,156.32, 1,077,375,018.96 and 423,478,038.76

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Solution

The fourth proportional to 780,711,156.32, 1,077,375,018.96 and 423,478,038.76 is: 584,396,234.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,711,156.32 : 1,077,375,018.96 = 423,478,038.76 : x
  2. Step 2: Convert to fraction form
    780,711,156.32/1,077,375,018.96 = 423,478,038.76/x
  3. Step 3: Cross multiply
    780,711,156.32x = 1,077,375,018.96 × 423,478,038.76
  4. Step 4: Simplify right side
    780,711,156.32x = 456,244,660,038,198,592
  5. Step 5: Solve for x
    x = 456,244,660,038,198,592/780,711,156.32
  6. Step 6: Final answer
    x = 584,396,234.57

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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.