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Finding the Fourth Proportional to 1,315,480.80, 1,973,998.80 and 473,923.20

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Solution

The fourth proportional to 1,315,480.80, 1,973,998.80 and 473,923.20 is: 711,164.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,480.80 : 1,973,998.80 = 473,923.20 : x
  2. Step 2: Convert to fraction form
    1,315,480.80/1,973,998.80 = 473,923.20/x
  3. Step 3: Cross multiply
    1,315,480.80x = 1,973,998.80 × 473,923.20
  4. Step 4: Simplify right side
    1,315,480.80x = 935,523,828,092.16
  5. Step 5: Solve for x
    x = 935,523,828,092.16/1,315,480.80
  6. Step 6: Final answer
    x = 711,164.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.