Home / 693,721.89-957,490.54-421,732.13

Finding the Fourth Proportional to 693,721.89, 957,490.54 and 421,732.13

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Solution

The fourth proportional to 693,721.89, 957,490.54 and 421,732.13 is: 582,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,721.89 : 957,490.54 = 421,732.13 : x
  2. Step 2: Convert to fraction form
    693,721.89/957,490.54 = 421,732.13/x
  3. Step 3: Cross multiply
    693,721.89x = 957,490.54 × 421,732.13
  4. Step 4: Simplify right side
    693,721.89x = 403,804,519,047.27
  5. Step 5: Solve for x
    x = 403,804,519,047.27/693,721.89
  6. Step 6: Final answer
    x = 582,084.15

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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.