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Finding the Fourth Proportional to 720,029.88, 992,896.98 and 618,391.88

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Solution

The fourth proportional to 720,029.88, 992,896.98 and 618,391.88 is: 852,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,029.88 : 992,896.98 = 618,391.88 : x
  2. Step 2: Convert to fraction form
    720,029.88/992,896.98 = 618,391.88/x
  3. Step 3: Cross multiply
    720,029.88x = 992,896.98 × 618,391.88
  4. Step 4: Simplify right side
    720,029.88x = 613,999,430,108.52
  5. Step 5: Solve for x
    x = 613,999,430,108.52/720,029.88
  6. Step 6: Final answer
    x = 852,741.60

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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.