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Finding the Fourth Proportional to 478,877.68, 660,164.28 and 376,725.58

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Solution

The fourth proportional to 478,877.68, 660,164.28 and 376,725.58 is: 519,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,877.68 : 660,164.28 = 376,725.58 : x
  2. Step 2: Convert to fraction form
    478,877.68/660,164.28 = 376,725.58/x
  3. Step 3: Cross multiply
    478,877.68x = 660,164.28 × 376,725.58
  4. Step 4: Simplify right side
    478,877.68x = 248,700,771,278.28
  5. Step 5: Solve for x
    x = 248,700,771,278.28/478,877.68
  6. Step 6: Final answer
    x = 519,340.91

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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.