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Finding the Fourth Proportional to 585,743.70, 877,612.57 and 319,690.90

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Solution

The fourth proportional to 585,743.70, 877,612.57 and 319,690.90 is: 478,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,743.70 : 877,612.57 = 319,690.90 : x
  2. Step 2: Convert to fraction form
    585,743.70/877,612.57 = 319,690.90/x
  3. Step 3: Cross multiply
    585,743.70x = 877,612.57 × 319,690.90
  4. Step 4: Simplify right side
    585,743.70x = 280,564,754,450.66
  5. Step 5: Solve for x
    x = 280,564,754,450.66/585,743.70
  6. Step 6: Final answer
    x = 478,988.94

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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.