Home / 656,573.40-905,916.96-398,444.52

Finding the Fourth Proportional to 656,573.40, 905,916.96 and 398,444.52

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Solution

The fourth proportional to 656,573.40, 905,916.96 and 398,444.52 is: 549,759.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,573.40 : 905,916.96 = 398,444.52 : x
  2. Step 2: Convert to fraction form
    656,573.40/905,916.96 = 398,444.52/x
  3. Step 3: Cross multiply
    656,573.40x = 905,916.96 × 398,444.52
  4. Step 4: Simplify right side
    656,573.40x = 360,957,648,287.06
  5. Step 5: Solve for x
    x = 360,957,648,287.06/656,573.40
  6. Step 6: Final answer
    x = 549,759.78

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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.