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Finding the Fourth Proportional to 978,026.70, 1,465,290.45 and 838,058.70

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Solution

The fourth proportional to 978,026.70, 1,465,290.45 and 838,058.70 is: 1,255,588.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,026.70 : 1,465,290.45 = 838,058.70 : x
  2. Step 2: Convert to fraction form
    978,026.70/1,465,290.45 = 838,058.70/x
  3. Step 3: Cross multiply
    978,026.70x = 1,465,290.45 × 838,058.70
  4. Step 4: Simplify right side
    978,026.70x = 1,227,999,409,649.41
  5. Step 5: Solve for x
    x = 1,227,999,409,649.41/978,026.70
  6. Step 6: Final answer
    x = 1,255,588.84

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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.