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Finding the Fourth Proportional to 666,708.01, 920,059.47 and 360,784.36

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Solution

The fourth proportional to 666,708.01, 920,059.47 and 360,784.36 is: 497,883.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,708.01 : 920,059.47 = 360,784.36 : x
  2. Step 2: Convert to fraction form
    666,708.01/920,059.47 = 360,784.36/x
  3. Step 3: Cross multiply
    666,708.01x = 920,059.47 × 360,784.36
  4. Step 4: Simplify right side
    666,708.01x = 331,943,067,045.89
  5. Step 5: Solve for x
    x = 331,943,067,045.89/666,708.01
  6. Step 6: Final answer
    x = 497,883.72

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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.