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Finding the Fourth Proportional to 480,459.51, 720,689.40 and 125,470.49

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Solution

The fourth proportional to 480,459.51, 720,689.40 and 125,470.49 is: 188,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,459.51 : 720,689.40 = 125,470.49 : x
  2. Step 2: Convert to fraction form
    480,459.51/720,689.40 = 125,470.49/x
  3. Step 3: Cross multiply
    480,459.51x = 720,689.40 × 125,470.49
  4. Step 4: Simplify right side
    480,459.51x = 90,425,248,552.36
  5. Step 5: Solve for x
    x = 90,425,248,552.36/480,459.51
  6. Step 6: Final answer
    x = 188,205.76

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1.5x scale

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.