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Finding the Fourth Proportional to 709,752.19, 979,457.08 and 455,102.77

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Solution

The fourth proportional to 709,752.19, 979,457.08 and 455,102.77 is: 628,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,752.19 : 979,457.08 = 455,102.77 : x
  2. Step 2: Convert to fraction form
    709,752.19/979,457.08 = 455,102.77/x
  3. Step 3: Cross multiply
    709,752.19x = 979,457.08 × 455,102.77
  4. Step 4: Simplify right side
    709,752.19x = 445,753,627,928.60
  5. Step 5: Solve for x
    x = 445,753,627,928.60/709,752.19
  6. Step 6: Final answer
    x = 628,041.22

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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.