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Finding the Fourth Proportional to 666,290.13, 919,477.63 and 360,366.85

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Solution

The fourth proportional to 666,290.13, 919,477.63 and 360,366.85 is: 497,304.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,290.13 : 919,477.63 = 360,366.85 : x
  2. Step 2: Convert to fraction form
    666,290.13/919,477.63 = 360,366.85/x
  3. Step 3: Cross multiply
    666,290.13x = 919,477.63 × 360,366.85
  4. Step 4: Simplify right side
    666,290.13x = 331,349,257,168.57
  5. Step 5: Solve for x
    x = 331,349,257,168.57/666,290.13
  6. Step 6: Final answer
    x = 497,304.77

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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.