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Finding the Fourth Proportional to 666,210.94, 919,424.06 and 424,601.98

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Solution

The fourth proportional to 666,210.94, 919,424.06 and 424,601.98 is: 585,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,210.94 : 919,424.06 = 424,601.98 : x
  2. Step 2: Convert to fraction form
    666,210.94/919,424.06 = 424,601.98/x
  3. Step 3: Cross multiply
    666,210.94x = 919,424.06 × 424,601.98
  4. Step 4: Simplify right side
    666,210.94x = 390,389,274,212.63
  5. Step 5: Solve for x
    x = 390,389,274,212.63/666,210.94
  6. Step 6: Final answer
    x = 585,984.48

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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.