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Finding the Fourth Proportional to 553,707.47, 830,664.66 and 381,326.17

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Solution

The fourth proportional to 553,707.47, 830,664.66 and 381,326.17 is: 572,060.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,707.47 : 830,664.66 = 381,326.17 : x
  2. Step 2: Convert to fraction form
    553,707.47/830,664.66 = 381,326.17/x
  3. Step 3: Cross multiply
    553,707.47x = 830,664.66 × 381,326.17
  4. Step 4: Simplify right side
    553,707.47x = 316,754,169,198.83
  5. Step 5: Solve for x
    x = 316,754,169,198.83/553,707.47
  6. Step 6: Final answer
    x = 572,060.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.