Home / 900,899.40-1,351,347.42-427,326.12

Finding the Fourth Proportional to 900,899.40, 1,351,347.42 and 427,326.12

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Solution

The fourth proportional to 900,899.40, 1,351,347.42 and 427,326.12 is: 640,988.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,899.40 : 1,351,347.42 = 427,326.12 : x
  2. Step 2: Convert to fraction form
    900,899.40/1,351,347.42 = 427,326.12/x
  3. Step 3: Cross multiply
    900,899.40x = 1,351,347.42 × 427,326.12
  4. Step 4: Simplify right side
    900,899.40x = 577,466,049,760.61
  5. Step 5: Solve for x
    x = 577,466,049,760.61/900,899.40
  6. Step 6: Final answer
    x = 640,988.38

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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.