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Finding the Fourth Proportional to 666,718.68, 920,071.76 and 360,795.06

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Solution

The fourth proportional to 666,718.68, 920,071.76 and 360,795.06 is: 497,897.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,718.68 : 920,071.76 = 360,795.06 : x
  2. Step 2: Convert to fraction form
    666,718.68/920,071.76 = 360,795.06/x
  3. Step 3: Cross multiply
    666,718.68x = 920,071.76 × 360,795.06
  4. Step 4: Simplify right side
    666,718.68x = 331,957,344,928.91
  5. Step 5: Solve for x
    x = 331,957,344,928.91/666,718.68
  6. Step 6: Final answer
    x = 497,897.17

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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.