Home / 685,962.30-1,029,052.80-286,397.40

Finding the Fourth Proportional to 685,962.30, 1,029,052.80 and 286,397.40

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Solution

The fourth proportional to 685,962.30, 1,029,052.80 and 286,397.40 is: 429,641.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,962.30 : 1,029,052.80 = 286,397.40 : x
  2. Step 2: Convert to fraction form
    685,962.30/1,029,052.80 = 286,397.40/x
  3. Step 3: Cross multiply
    685,962.30x = 1,029,052.80 × 286,397.40
  4. Step 4: Simplify right side
    685,962.30x = 294,718,046,382.72
  5. Step 5: Solve for x
    x = 294,718,046,382.72/685,962.30
  6. Step 6: Final answer
    x = 429,641.75

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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.