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Finding the Fourth Proportional to 660,703.98, 911,835.48 and 370,364.86

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Solution

The fourth proportional to 660,703.98, 911,835.48 and 370,364.86 is: 511,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,703.98 : 911,835.48 = 370,364.86 : x
  2. Step 2: Convert to fraction form
    660,703.98/911,835.48 = 370,364.86/x
  3. Step 3: Cross multiply
    660,703.98x = 911,835.48 × 370,364.86
  4. Step 4: Simplify right side
    660,703.98x = 337,711,820,979.72
  5. Step 5: Solve for x
    x = 337,711,820,979.72/660,703.98
  6. Step 6: Final answer
    x = 511,139.38

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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.