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Finding the Fourth Proportional to 666,553.88, 919,587.49 and 462,502.68

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Solution

The fourth proportional to 666,553.88, 919,587.49 and 462,502.68 is: 638,075.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,553.88 : 919,587.49 = 462,502.68 : x
  2. Step 2: Convert to fraction form
    666,553.88/919,587.49 = 462,502.68/x
  3. Step 3: Cross multiply
    666,553.88x = 919,587.49 × 462,502.68
  4. Step 4: Simplify right side
    666,553.88x = 425,311,678,619.47
  5. Step 5: Solve for x
    x = 425,311,678,619.47/666,553.88
  6. Step 6: Final answer
    x = 638,075.47

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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.