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Finding the Fourth Proportional to 487,970.80, 730,530.60 and 348,002.80

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Solution

The fourth proportional to 487,970.80, 730,530.60 and 348,002.80 is: 520,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,970.80 : 730,530.60 = 348,002.80 : x
  2. Step 2: Convert to fraction form
    487,970.80/730,530.60 = 348,002.80/x
  3. Step 3: Cross multiply
    487,970.80x = 730,530.60 × 348,002.80
  4. Step 4: Simplify right side
    487,970.80x = 254,226,694,285.68
  5. Step 5: Solve for x
    x = 254,226,694,285.68/487,970.80
  6. Step 6: Final answer
    x = 520,987.51

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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.