Home / 687,896,507.16-949,290,573.78-374,635,953.72

Finding the Fourth Proportional to 687,896,507.16, 949,290,573.78 and 374,635,953.72

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Solution

The fourth proportional to 687,896,507.16, 949,290,573.78 and 374,635,953.72 is: 516,994,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,896,507.16 : 949,290,573.78 = 374,635,953.72 : x
  2. Step 2: Convert to fraction form
    687,896,507.16/949,290,573.78 = 374,635,953.72/x
  3. Step 3: Cross multiply
    687,896,507.16x = 949,290,573.78 × 374,635,953.72
  4. Step 4: Simplify right side
    687,896,507.16x = 355,638,379,465,476,352
  5. Step 5: Solve for x
    x = 355,638,379,465,476,352/687,896,507.16
  6. Step 6: Final answer
    x = 516,994,018.38

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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.