Home / 690,913.56-953,462.64-400,581.42

Finding the Fourth Proportional to 690,913.56, 953,462.64 and 400,581.42

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Solution

The fourth proportional to 690,913.56, 953,462.64 and 400,581.42 is: 552,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,913.56 : 953,462.64 = 400,581.42 : x
  2. Step 2: Convert to fraction form
    690,913.56/953,462.64 = 400,581.42/x
  3. Step 3: Cross multiply
    690,913.56x = 953,462.64 × 400,581.42
  4. Step 4: Simplify right side
    690,913.56x = 381,939,418,248.15
  5. Step 5: Solve for x
    x = 381,939,418,248.15/690,913.56
  6. Step 6: Final answer
    x = 552,803.48

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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.