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Finding the Fourth Proportional to 761,661.84, 1,051,052.88 and 439,352.76

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Solution

The fourth proportional to 761,661.84, 1,051,052.88 and 439,352.76 is: 606,283.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,661.84 : 1,051,052.88 = 439,352.76 : x
  2. Step 2: Convert to fraction form
    761,661.84/1,051,052.88 = 439,352.76/x
  3. Step 3: Cross multiply
    761,661.84x = 1,051,052.88 × 439,352.76
  4. Step 4: Simplify right side
    761,661.84x = 461,782,983,733.95
  5. Step 5: Solve for x
    x = 461,782,983,733.95/761,661.84
  6. Step 6: Final answer
    x = 606,283.47

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Double scale
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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.