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Finding the Fourth Proportional to 612,712.32, 845,534.88 and 344,440.32

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Solution

The fourth proportional to 612,712.32, 845,534.88 and 344,440.32 is: 475,323.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,712.32 : 845,534.88 = 344,440.32 : x
  2. Step 2: Convert to fraction form
    612,712.32/845,534.88 = 344,440.32/x
  3. Step 3: Cross multiply
    612,712.32x = 845,534.88 × 344,440.32
  4. Step 4: Simplify right side
    612,712.32x = 291,236,304,638.36
  5. Step 5: Solve for x
    x = 291,236,304,638.36/612,712.32
  6. Step 6: Final answer
    x = 475,323.08

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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.