Home / 668,017.12-921,844.56-381,531.28

Finding the Fourth Proportional to 668,017.12, 921,844.56 and 381,531.28

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Solution

The fourth proportional to 668,017.12, 921,844.56 and 381,531.28 is: 526,502.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,017.12 : 921,844.56 = 381,531.28 : x
  2. Step 2: Convert to fraction form
    668,017.12/921,844.56 = 381,531.28/x
  3. Step 3: Cross multiply
    668,017.12x = 921,844.56 × 381,531.28
  4. Step 4: Simplify right side
    668,017.12x = 351,712,534,937.84
  5. Step 5: Solve for x
    x = 351,712,534,937.84/668,017.12
  6. Step 6: Final answer
    x = 526,502.28

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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.