Home / 916,245.40-1,264,375.80-508,342.88

Finding the Fourth Proportional to 916,245.40, 1,264,375.80 and 508,342.88

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Solution

The fourth proportional to 916,245.40, 1,264,375.80 and 508,342.88 is: 701,489.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,245.40 : 1,264,375.80 = 508,342.88 : x
  2. Step 2: Convert to fraction form
    916,245.40/1,264,375.80 = 508,342.88/x
  3. Step 3: Cross multiply
    916,245.40x = 1,264,375.80 × 508,342.88
  4. Step 4: Simplify right side
    916,245.40x = 642,736,435,574.30
  5. Step 5: Solve for x
    x = 642,736,435,574.30/916,245.40
  6. Step 6: Final answer
    x = 701,489.40

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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.