Home / 908,743.78-1,254,071.28-521,528.32

Finding the Fourth Proportional to 908,743.78, 1,254,071.28 and 521,528.32

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Solution

The fourth proportional to 908,743.78, 1,254,071.28 and 521,528.32 is: 719,711.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,743.78 : 1,254,071.28 = 521,528.32 : x
  2. Step 2: Convert to fraction form
    908,743.78/1,254,071.28 = 521,528.32/x
  3. Step 3: Cross multiply
    908,743.78x = 1,254,071.28 × 521,528.32
  4. Step 4: Simplify right side
    908,743.78x = 654,033,687,818.65
  5. Step 5: Solve for x
    x = 654,033,687,818.65/908,743.78
  6. Step 6: Final answer
    x = 719,711.87

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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.