Home / 916,635.80-1,264,938.40-508,713.96

Finding the Fourth Proportional to 916,635.80, 1,264,938.40 and 508,713.96

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Solution

The fourth proportional to 916,635.80, 1,264,938.40 and 508,713.96 is: 702,014.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,635.80 : 1,264,938.40 = 508,713.96 : x
  2. Step 2: Convert to fraction form
    916,635.80/1,264,938.40 = 508,713.96/x
  3. Step 3: Cross multiply
    916,635.80x = 1,264,938.40 × 508,713.96
  4. Step 4: Simplify right side
    916,635.80x = 643,491,822,620.06
  5. Step 5: Solve for x
    x = 643,491,822,620.06/916,635.80
  6. Step 6: Final answer
    x = 702,014.72

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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.