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Finding the Fourth Proportional to 569,968.71, 786,579.98 and 315,315.51

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Solution

The fourth proportional to 569,968.71, 786,579.98 and 315,315.51 is: 435,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,968.71 : 786,579.98 = 315,315.51 : x
  2. Step 2: Convert to fraction form
    569,968.71/786,579.98 = 315,315.51/x
  3. Step 3: Cross multiply
    569,968.71x = 786,579.98 × 315,315.51
  4. Step 4: Simplify right side
    569,968.71x = 248,020,865,972.91
  5. Step 5: Solve for x
    x = 248,020,865,972.91/569,968.71
  6. Step 6: Final answer
    x = 435,148.21

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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.