Home / 916,643.56-1,264,949.08-508,721.72

Finding the Fourth Proportional to 916,643.56, 1,264,949.08 and 508,721.72

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Solution

The fourth proportional to 916,643.56, 1,264,949.08 and 508,721.72 is: 702,025.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,643.56 : 1,264,949.08 = 508,721.72 : x
  2. Step 2: Convert to fraction form
    916,643.56/1,264,949.08 = 508,721.72/x
  3. Step 3: Cross multiply
    916,643.56x = 1,264,949.08 × 508,721.72
  4. Step 4: Simplify right side
    916,643.56x = 643,507,071,690.02
  5. Step 5: Solve for x
    x = 643,507,071,690.02/916,643.56
  6. Step 6: Final answer
    x = 702,025.41

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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.