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Finding the Fourth Proportional to 657,878.88, 907,774.56 and 385,844.16

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Solution

The fourth proportional to 657,878.88, 907,774.56 and 385,844.16 is: 532,407.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,878.88 : 907,774.56 = 385,844.16 : x
  2. Step 2: Convert to fraction form
    657,878.88/907,774.56 = 385,844.16/x
  3. Step 3: Cross multiply
    657,878.88x = 907,774.56 × 385,844.16
  4. Step 4: Simplify right side
    657,878.88x = 350,259,512,572.57
  5. Step 5: Solve for x
    x = 350,259,512,572.57/657,878.88
  6. Step 6: Final answer
    x = 532,407.29

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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.