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Finding the Fourth Proportional to 610,209.66, 915,466.89 and 430,645.56

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Solution

The fourth proportional to 610,209.66, 915,466.89 and 430,645.56 is: 646,075.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,209.66 : 915,466.89 = 430,645.56 : x
  2. Step 2: Convert to fraction form
    610,209.66/915,466.89 = 430,645.56/x
  3. Step 3: Cross multiply
    610,209.66x = 915,466.89 × 430,645.56
  4. Step 4: Simplify right side
    610,209.66x = 394,241,751,505.51
  5. Step 5: Solve for x
    x = 394,241,751,505.51/610,209.66
  6. Step 6: Final answer
    x = 646,075.89

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1.5x scale

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.