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Finding the Fourth Proportional to 610,988.40, 916,186.59 and 358,351.61

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Solution

The fourth proportional to 610,988.40, 916,186.59 and 358,351.61 is: 537,353.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,988.40 : 916,186.59 = 358,351.61 : x
  2. Step 2: Convert to fraction form
    610,988.40/916,186.59 = 358,351.61/x
  3. Step 3: Cross multiply
    610,988.40x = 916,186.59 × 358,351.61
  4. Step 4: Simplify right side
    610,988.40x = 328,316,935,005.98
  5. Step 5: Solve for x
    x = 328,316,935,005.98/610,988.40
  6. Step 6: Final answer
    x = 537,353.79

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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.