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Finding the Fourth Proportional to 945,564, 1,304,881.48 and 515,853.20

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Solution

The fourth proportional to 945,564, 1,304,881.48 and 515,853.20 is: 711,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,564 : 1,304,881.48 = 515,853.20 : x
  2. Step 2: Convert to fraction form
    945,564/1,304,881.48 = 515,853.20/x
  3. Step 3: Cross multiply
    945,564x = 1,304,881.48 × 515,853.20
  4. Step 4: Simplify right side
    945,564x = 673,127,287,078.74
  5. Step 5: Solve for x
    x = 673,127,287,078.74/945,564
  6. Step 6: Final answer
    x = 711,879.14

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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.