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Finding the Fourth Proportional to 487,187.10, 729,905.85 and 417,203.10

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Solution

The fourth proportional to 487,187.10, 729,905.85 and 417,203.10 is: 625,055.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,187.10 : 729,905.85 = 417,203.10 : x
  2. Step 2: Convert to fraction form
    487,187.10/729,905.85 = 417,203.10/x
  3. Step 3: Cross multiply
    487,187.10x = 729,905.85 × 417,203.10
  4. Step 4: Simplify right side
    487,187.10x = 304,518,983,328.14
  5. Step 5: Solve for x
    x = 304,518,983,328.14/487,187.10
  6. Step 6: Final answer
    x = 625,055.51

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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.