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Finding the Fourth Proportional to 612,823.80, 919,926.90 and 473,201.40

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Solution

The fourth proportional to 612,823.80, 919,926.90 and 473,201.40 is: 710,335.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,823.80 : 919,926.90 = 473,201.40 : x
  2. Step 2: Convert to fraction form
    612,823.80/919,926.90 = 473,201.40/x
  3. Step 3: Cross multiply
    612,823.80x = 919,926.90 × 473,201.40
  4. Step 4: Simplify right side
    612,823.80x = 435,310,696,977.66
  5. Step 5: Solve for x
    x = 435,310,696,977.66/612,823.80
  6. Step 6: Final answer
    x = 710,335.82

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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.