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Finding the Fourth Proportional to 665,160.04, 917,919.30 and 363,356.20

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Solution

The fourth proportional to 665,160.04, 917,919.30 and 363,356.20 is: 501,430.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,160.04 : 917,919.30 = 363,356.20 : x
  2. Step 2: Convert to fraction form
    665,160.04/917,919.30 = 363,356.20/x
  3. Step 3: Cross multiply
    665,160.04x = 917,919.30 × 363,356.20
  4. Step 4: Simplify right side
    665,160.04x = 333,531,668,754.66
  5. Step 5: Solve for x
    x = 333,531,668,754.66/665,160.04
  6. Step 6: Final answer
    x = 501,430.71

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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.