Home / 917,431.71-1,266,058.69-509,533.48

Finding the Fourth Proportional to 917,431.71, 1,266,058.69 and 509,533.48

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Solution

The fourth proportional to 917,431.71, 1,266,058.69 and 509,533.48 is: 703,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,431.71 : 1,266,058.69 = 509,533.48 : x
  2. Step 2: Convert to fraction form
    917,431.71/1,266,058.69 = 509,533.48/x
  3. Step 3: Cross multiply
    917,431.71x = 1,266,058.69 × 509,533.48
  4. Step 4: Simplify right side
    917,431.71x = 645,099,288,627.09
  5. Step 5: Solve for x
    x = 645,099,288,627.09/917,431.71
  6. Step 6: Final answer
    x = 703,157.83

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1.5x scale

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.