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Finding the Fourth Proportional to 673,878.38, 929,616.54 and 401,754.74

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Solution

The fourth proportional to 673,878.38, 929,616.54 and 401,754.74 is: 554,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,878.38 : 929,616.54 = 401,754.74 : x
  2. Step 2: Convert to fraction form
    673,878.38/929,616.54 = 401,754.74/x
  3. Step 3: Cross multiply
    673,878.38x = 929,616.54 × 401,754.74
  4. Step 4: Simplify right side
    673,878.38x = 373,477,851,327.40
  5. Step 5: Solve for x
    x = 373,477,851,327.40/673,878.38
  6. Step 6: Final answer
    x = 554,221.45

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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.