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Finding the Fourth Proportional to 610,927.45, 915,199.16 and 399,925.69

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Solution

The fourth proportional to 610,927.45, 915,199.16 and 399,925.69 is: 599,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,927.45 : 915,199.16 = 399,925.69 : x
  2. Step 2: Convert to fraction form
    610,927.45/915,199.16 = 399,925.69/x
  3. Step 3: Cross multiply
    610,927.45x = 915,199.16 × 399,925.69
  4. Step 4: Simplify right side
    610,927.45x = 366,011,651,262.79
  5. Step 5: Solve for x
    x = 366,011,651,262.79/610,927.45
  6. Step 6: Final answer
    x = 599,108.21

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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.