Home / 688,681.31-1,033,040.43-215,366.67

Finding the Fourth Proportional to 688,681.31, 1,033,040.43 and 215,366.67

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Solution

The fourth proportional to 688,681.31, 1,033,040.43 and 215,366.67 is: 323,055.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,681.31 : 1,033,040.43 = 215,366.67 : x
  2. Step 2: Convert to fraction form
    688,681.31/1,033,040.43 = 215,366.67/x
  3. Step 3: Cross multiply
    688,681.31x = 1,033,040.43 × 215,366.67
  4. Step 4: Simplify right side
    688,681.31x = 222,482,477,384.47
  5. Step 5: Solve for x
    x = 222,482,477,384.47/688,681.31
  6. Step 6: Final answer
    x = 323,055.78

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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.