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Finding the Fourth Proportional to 612,400.40, 918,477.23 and 384,594.28

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Solution

The fourth proportional to 612,400.40, 918,477.23 and 384,594.28 is: 576,813.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,400.40 : 918,477.23 = 384,594.28 : x
  2. Step 2: Convert to fraction form
    612,400.40/918,477.23 = 384,594.28/x
  3. Step 3: Cross multiply
    612,400.40x = 918,477.23 × 384,594.28
  4. Step 4: Simplify right side
    612,400.40x = 353,241,084,749.08
  5. Step 5: Solve for x
    x = 353,241,084,749.08/612,400.40
  6. Step 6: Final answer
    x = 576,813.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.