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Finding the Fourth Proportional to 507,491.40, 700,570.39 and 438,305.66

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Solution

The fourth proportional to 507,491.40, 700,570.39 and 438,305.66 is: 605,062.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,491.40 : 700,570.39 = 438,305.66 : x
  2. Step 2: Convert to fraction form
    507,491.40/700,570.39 = 438,305.66/x
  3. Step 3: Cross multiply
    507,491.40x = 700,570.39 × 438,305.66
  4. Step 4: Simplify right side
    507,491.40x = 307,063,967,165.41
  5. Step 5: Solve for x
    x = 307,063,967,165.41/507,491.40
  6. Step 6: Final answer
    x = 605,062.41

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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.