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Finding the Fourth Proportional to 803,806.42, 1,109,212.76 and 464,254.42

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Solution

The fourth proportional to 803,806.42, 1,109,212.76 and 464,254.42 is: 640,647.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,806.42 : 1,109,212.76 = 464,254.42 : x
  2. Step 2: Convert to fraction form
    803,806.42/1,109,212.76 = 464,254.42/x
  3. Step 3: Cross multiply
    803,806.42x = 1,109,212.76 × 464,254.42
  4. Step 4: Simplify right side
    803,806.42x = 514,956,926,550.40
  5. Step 5: Solve for x
    x = 514,956,926,550.40/803,806.42
  6. Step 6: Final answer
    x = 640,647.94

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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.