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Finding the Fourth Proportional to 916,722.90, 1,265,058 and 508,800.96

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Solution

The fourth proportional to 916,722.90, 1,265,058 and 508,800.96 is: 702,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,722.90 : 1,265,058 = 508,800.96 : x
  2. Step 2: Convert to fraction form
    916,722.90/1,265,058 = 508,800.96/x
  3. Step 3: Cross multiply
    916,722.90x = 1,265,058 × 508,800.96
  4. Step 4: Simplify right side
    916,722.90x = 643,662,724,855.68
  5. Step 5: Solve for x
    x = 643,662,724,855.68/916,722.90
  6. Step 6: Final answer
    x = 702,134.45

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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.