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Finding the Fourth Proportional to 660,156.84, 990,235.22 and 360,473.91

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Solution

The fourth proportional to 660,156.84, 990,235.22 and 360,473.91 is: 540,710.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,156.84 : 990,235.22 = 360,473.91 : x
  2. Step 2: Convert to fraction form
    660,156.84/990,235.22 = 360,473.91/x
  3. Step 3: Cross multiply
    660,156.84x = 990,235.22 × 360,473.91
  4. Step 4: Simplify right side
    660,156.84x = 356,953,959,770.74
  5. Step 5: Solve for x
    x = 356,953,959,770.74/660,156.84
  6. Step 6: Final answer
    x = 540,710.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.