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Finding the Fourth Proportional to 657,051.40, 985,346.70 and 341,403.40

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Solution

The fourth proportional to 657,051.40, 985,346.70 and 341,403.40 is: 511,985.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,051.40 : 985,346.70 = 341,403.40 : x
  2. Step 2: Convert to fraction form
    657,051.40/985,346.70 = 341,403.40/x
  3. Step 3: Cross multiply
    657,051.40x = 985,346.70 × 341,403.40
  4. Step 4: Simplify right side
    657,051.40x = 336,400,713,558.78
  5. Step 5: Solve for x
    x = 336,400,713,558.78/657,051.40
  6. Step 6: Final answer
    x = 511,985.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.