Home / 766,584,005.10-1,149,876,007.65-421,404,254.70

Finding the Fourth Proportional to 766,584,005.10, 1,149,876,007.65 and 421,404,254.70

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Solution

The fourth proportional to 766,584,005.10, 1,149,876,007.65 and 421,404,254.70 is: 632,106,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,584,005.10 : 1,149,876,007.65 = 421,404,254.70 : x
  2. Step 2: Convert to fraction form
    766,584,005.10/1,149,876,007.65 = 421,404,254.70/x
  3. Step 3: Cross multiply
    766,584,005.10x = 1,149,876,007.65 × 421,404,254.70
  4. Step 4: Simplify right side
    766,584,005.10x = 484,562,642,001,159,744
  5. Step 5: Solve for x
    x = 484,562,642,001,159,744/766,584,005.10
  6. Step 6: Final answer
    x = 632,106,382.05

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1.5x scale

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.