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Finding the Fourth Proportional to 553,600.44, 763,810.58 and 311,798.52

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Solution

The fourth proportional to 553,600.44, 763,810.58 and 311,798.52 is: 430,192.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,600.44 : 763,810.58 = 311,798.52 : x
  2. Step 2: Convert to fraction form
    553,600.44/763,810.58 = 311,798.52/x
  3. Step 3: Cross multiply
    553,600.44x = 763,810.58 × 311,798.52
  4. Step 4: Simplify right side
    553,600.44x = 238,155,008,404.34
  5. Step 5: Solve for x
    x = 238,155,008,404.34/553,600.44
  6. Step 6: Final answer
    x = 430,192.95

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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.