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Finding the Fourth Proportional to 897,638.94, 1,238,850.63 and 655,800.48

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Solution

The fourth proportional to 897,638.94, 1,238,850.63 and 655,800.48 is: 905,084.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,638.94 : 1,238,850.63 = 655,800.48 : x
  2. Step 2: Convert to fraction form
    897,638.94/1,238,850.63 = 655,800.48/x
  3. Step 3: Cross multiply
    897,638.94x = 1,238,850.63 × 655,800.48
  4. Step 4: Simplify right side
    897,638.94x = 812,438,837,802.30
  5. Step 5: Solve for x
    x = 812,438,837,802.30/897,638.94
  6. Step 6: Final answer
    x = 905,084.22

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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.