Home / 727,801.80-1,091,702.70-612,328.20

Finding the Fourth Proportional to 727,801.80, 1,091,702.70 and 612,328.20

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Solution

The fourth proportional to 727,801.80, 1,091,702.70 and 612,328.20 is: 918,492.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,801.80 : 1,091,702.70 = 612,328.20 : x
  2. Step 2: Convert to fraction form
    727,801.80/1,091,702.70 = 612,328.20/x
  3. Step 3: Cross multiply
    727,801.80x = 1,091,702.70 × 612,328.20
  4. Step 4: Simplify right side
    727,801.80x = 668,480,349,226.14
  5. Step 5: Solve for x
    x = 668,480,349,226.14/727,801.80
  6. Step 6: Final answer
    x = 918,492.30

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Double scale
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Similar ratio
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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.