Home / 689,725,669.32-953,066,482.06-491,142,401.23

Finding the Fourth Proportional to 689,725,669.32, 953,066,482.06 and 491,142,401.23

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Solution

The fourth proportional to 689,725,669.32, 953,066,482.06 and 491,142,401.23 is: 678,663,099.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,725,669.32 : 953,066,482.06 = 491,142,401.23 : x
  2. Step 2: Convert to fraction form
    689,725,669.32/953,066,482.06 = 491,142,401.23/x
  3. Step 3: Cross multiply
    689,725,669.32x = 953,066,482.06 × 491,142,401.23
  4. Step 4: Simplify right side
    689,725,669.32x = 468,091,360,530,777,088
  5. Step 5: Solve for x
    x = 468,091,360,530,777,088/689,725,669.32
  6. Step 6: Final answer
    x = 678,663,099.48

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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.