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Finding the Fourth Proportional to 612,663.92, 845,427.16 and 340,732.32

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Solution

The fourth proportional to 612,663.92, 845,427.16 and 340,732.32 is: 470,183.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,663.92 : 845,427.16 = 340,732.32 : x
  2. Step 2: Convert to fraction form
    612,663.92/845,427.16 = 340,732.32/x
  3. Step 3: Cross multiply
    612,663.92x = 845,427.16 × 340,732.32
  4. Step 4: Simplify right side
    612,663.92x = 288,064,357,617.81
  5. Step 5: Solve for x
    x = 288,064,357,617.81/612,663.92
  6. Step 6: Final answer
    x = 470,183.32

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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.