Home / 657,072.96-906,803.01-385,041.75

Finding the Fourth Proportional to 657,072.96, 906,803.01 and 385,041.75

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Solution

The fourth proportional to 657,072.96, 906,803.01 and 385,041.75 is: 531,382.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,072.96 : 906,803.01 = 385,041.75 : x
  2. Step 2: Convert to fraction form
    657,072.96/906,803.01 = 385,041.75/x
  3. Step 3: Cross multiply
    657,072.96x = 906,803.01 × 385,041.75
  4. Step 4: Simplify right side
    657,072.96x = 349,157,017,875.67
  5. Step 5: Solve for x
    x = 349,157,017,875.67/657,072.96
  6. Step 6: Final answer
    x = 531,382.42

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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.