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Finding the Fourth Proportional to 666,725.82, 920,075.13 and 360,795.66

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Solution

The fourth proportional to 666,725.82, 920,075.13 and 360,795.66 is: 497,894.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,725.82 : 920,075.13 = 360,795.66 : x
  2. Step 2: Convert to fraction form
    666,725.82/920,075.13 = 360,795.66/x
  3. Step 3: Cross multiply
    666,725.82x = 920,075.13 × 360,795.66
  4. Step 4: Simplify right side
    666,725.82x = 331,959,113,777.94
  5. Step 5: Solve for x
    x = 331,959,113,777.94/666,725.82
  6. Step 6: Final answer
    x = 497,894.49

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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.