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Finding the Fourth Proportional to 775,210.40, 1,069,800.72 and 435,658.40

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Solution

The fourth proportional to 775,210.40, 1,069,800.72 and 435,658.40 is: 601,214.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,210.40 : 1,069,800.72 = 435,658.40 : x
  2. Step 2: Convert to fraction form
    775,210.40/1,069,800.72 = 435,658.40/x
  3. Step 3: Cross multiply
    775,210.40x = 1,069,800.72 × 435,658.40
  4. Step 4: Simplify right side
    775,210.40x = 466,067,669,994.05
  5. Step 5: Solve for x
    x = 466,067,669,994.05/775,210.40
  6. Step 6: Final answer
    x = 601,214.42

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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.