Home / 916,642.50-1,264,947.60-508,720.64

Finding the Fourth Proportional to 916,642.50, 1,264,947.60 and 508,720.64

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Solution

The fourth proportional to 916,642.50, 1,264,947.60 and 508,720.64 is: 702,023.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,642.50 : 1,264,947.60 = 508,720.64 : x
  2. Step 2: Convert to fraction form
    916,642.50/1,264,947.60 = 508,720.64/x
  3. Step 3: Cross multiply
    916,642.50x = 1,264,947.60 × 508,720.64
  4. Step 4: Simplify right side
    916,642.50x = 643,504,952,638.46
  5. Step 5: Solve for x
    x = 643,504,952,638.46/916,642.50
  6. Step 6: Final answer
    x = 702,023.91

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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.