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Finding the Fourth Proportional to 610,744.38, 915,520.86 and 290,810.28

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Solution

The fourth proportional to 610,744.38, 915,520.86 and 290,810.28 is: 435,931.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,744.38 : 915,520.86 = 290,810.28 : x
  2. Step 2: Convert to fraction form
    610,744.38/915,520.86 = 290,810.28/x
  3. Step 3: Cross multiply
    610,744.38x = 915,520.86 × 290,810.28
  4. Step 4: Simplify right side
    610,744.38x = 266,242,877,642.44
  5. Step 5: Solve for x
    x = 266,242,877,642.44/610,744.38
  6. Step 6: Final answer
    x = 435,931.77

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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.