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Finding the Fourth Proportional to 922,255.32, 1,272,681 and 508,808.64

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Solution

The fourth proportional to 922,255.32, 1,272,681 and 508,808.64 is: 702,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,255.32 : 1,272,681 = 508,808.64 : x
  2. Step 2: Convert to fraction form
    922,255.32/1,272,681 = 508,808.64/x
  3. Step 3: Cross multiply
    922,255.32x = 1,272,681 × 508,808.64
  4. Step 4: Simplify right side
    922,255.32x = 647,551,088,763.84
  5. Step 5: Solve for x
    x = 647,551,088,763.84/922,255.32
  6. Step 6: Final answer
    x = 702,138.63

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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.