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Finding the Fourth Proportional to 478,671.51, 660,558.13 and 260,882.16

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Solution

The fourth proportional to 478,671.51, 660,558.13 and 260,882.16 is: 360,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,671.51 : 660,558.13 = 260,882.16 : x
  2. Step 2: Convert to fraction form
    478,671.51/660,558.13 = 260,882.16/x
  3. Step 3: Cross multiply
    478,671.51x = 660,558.13 × 260,882.16
  4. Step 4: Simplify right side
    478,671.51x = 172,327,831,759.96
  5. Step 5: Solve for x
    x = 172,327,831,759.96/478,671.51
  6. Step 6: Final answer
    x = 360,012.72

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1.5x scale

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.