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Finding the Fourth Proportional to 660,918.96, 912,066.48 and 359,112.96

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Solution

The fourth proportional to 660,918.96, 912,066.48 and 359,112.96 is: 495,574.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,918.96 : 912,066.48 = 359,112.96 : x
  2. Step 2: Convert to fraction form
    660,918.96/912,066.48 = 359,112.96/x
  3. Step 3: Cross multiply
    660,918.96x = 912,066.48 × 359,112.96
  4. Step 4: Simplify right side
    660,918.96x = 327,534,893,349.58
  5. Step 5: Solve for x
    x = 327,534,893,349.58/660,918.96
  6. Step 6: Final answer
    x = 495,574.97

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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.