Home / 740,955.61-1,022,520.45-401,423.86

Finding the Fourth Proportional to 740,955.61, 1,022,520.45 and 401,423.86

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Solution

The fourth proportional to 740,955.61, 1,022,520.45 and 401,423.86 is: 553,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,955.61 : 1,022,520.45 = 401,423.86 : x
  2. Step 2: Convert to fraction form
    740,955.61/1,022,520.45 = 401,423.86/x
  3. Step 3: Cross multiply
    740,955.61x = 1,022,520.45 × 401,423.86
  4. Step 4: Simplify right side
    740,955.61x = 410,464,105,967.94
  5. Step 5: Solve for x
    x = 410,464,105,967.94/740,955.61
  6. Step 6: Final answer
    x = 553,965.85

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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.