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Finding the Fourth Proportional to 1,430,903.20, 1,973,824.22 and 893,426.08

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Solution

The fourth proportional to 1,430,903.20, 1,973,824.22 and 893,426.08 is: 1,232,414.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430,903.20 : 1,973,824.22 = 893,426.08 : x
  2. Step 2: Convert to fraction form
    1,430,903.20/1,973,824.22 = 893,426.08/x
  3. Step 3: Cross multiply
    1,430,903.20x = 1,973,824.22 × 893,426.08
  4. Step 4: Simplify right side
    1,430,903.20x = 1,763,466,035,483.66
  5. Step 5: Solve for x
    x = 1,763,466,035,483.66/1,430,903.20
  6. Step 6: Final answer
    x = 1,232,414.63

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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.