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Finding the Fourth Proportional to 916,883.84, 1,265,267.04 and 509,003.48

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Solution

The fourth proportional to 916,883.84, 1,265,267.04 and 509,003.48 is: 702,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,883.84 : 1,265,267.04 = 509,003.48 : x
  2. Step 2: Convert to fraction form
    916,883.84/1,265,267.04 = 509,003.48/x
  3. Step 3: Cross multiply
    916,883.84x = 1,265,267.04 × 509,003.48
  4. Step 4: Simplify right side
    916,883.84x = 644,025,326,489.30
  5. Step 5: Solve for x
    x = 644,025,326,489.30/916,883.84
  6. Step 6: Final answer
    x = 702,406.67

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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.