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Finding the Fourth Proportional to 666,867.94, 920,026.59 and 437,551.76

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Solution

The fourth proportional to 666,867.94, 920,026.59 and 437,551.76 is: 603,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,867.94 : 920,026.59 = 437,551.76 : x
  2. Step 2: Convert to fraction form
    666,867.94/920,026.59 = 437,551.76/x
  3. Step 3: Cross multiply
    666,867.94x = 920,026.59 × 437,551.76
  4. Step 4: Simplify right side
    666,867.94x = 402,559,254,912.68
  5. Step 5: Solve for x
    x = 402,559,254,912.68/666,867.94
  6. Step 6: Final answer
    x = 603,656.63

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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.