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Finding the Fourth Proportional to 666,723.97, 920,075.55 and 360,800.17

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Solution

The fourth proportional to 666,723.97, 920,075.55 and 360,800.17 is: 497,902.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,723.97 : 920,075.55 = 360,800.17 : x
  2. Step 2: Convert to fraction form
    666,723.97/920,075.55 = 360,800.17/x
  3. Step 3: Cross multiply
    666,723.97x = 920,075.55 × 360,800.17
  4. Step 4: Simplify right side
    666,723.97x = 331,963,417,389.83
  5. Step 5: Solve for x
    x = 331,963,417,389.83/666,723.97
  6. Step 6: Final answer
    x = 497,902.33

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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.