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Finding the Fourth Proportional to 666,707.51, 920,058.78 and 360,783.86

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Solution

The fourth proportional to 666,707.51, 920,058.78 and 360,783.86 is: 497,883.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,707.51 : 920,058.78 = 360,783.86 : x
  2. Step 2: Convert to fraction form
    666,707.51/920,058.78 = 360,783.86/x
  3. Step 3: Cross multiply
    666,707.51x = 920,058.78 × 360,783.86
  4. Step 4: Simplify right side
    666,707.51x = 331,942,353,475.00
  5. Step 5: Solve for x
    x = 331,942,353,475.00/666,707.51
  6. Step 6: Final answer
    x = 497,883.03

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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.