Home / 688,637.80-1,032,956.70-215,322.40

Finding the Fourth Proportional to 688,637.80, 1,032,956.70 and 215,322.40

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Solution

The fourth proportional to 688,637.80, 1,032,956.70 and 215,322.40 is: 322,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,637.80 : 1,032,956.70 = 215,322.40 : x
  2. Step 2: Convert to fraction form
    688,637.80/1,032,956.70 = 215,322.40/x
  3. Step 3: Cross multiply
    688,637.80x = 1,032,956.70 × 215,322.40
  4. Step 4: Simplify right side
    688,637.80x = 222,418,715,740.08
  5. Step 5: Solve for x
    x = 222,418,715,740.08/688,637.80
  6. Step 6: Final answer
    x = 322,983.60

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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.