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Finding the Fourth Proportional to 934,902, 1,290,137.40 and 527,027.76

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Solution

The fourth proportional to 934,902, 1,290,137.40 and 527,027.76 is: 727,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    934,902 : 1,290,137.40 = 527,027.76 : x
  2. Step 2: Convert to fraction form
    934,902/1,290,137.40 = 527,027.76/x
  3. Step 3: Cross multiply
    934,902x = 1,290,137.40 × 527,027.76
  4. Step 4: Simplify right side
    934,902x = 679,938,224,014.22
  5. Step 5: Solve for x
    x = 679,938,224,014.22/934,902
  6. Step 6: Final answer
    x = 727,282.89

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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.