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Finding the Fourth Proportional to 620,998.95, 931,498.43 and 620,998.95

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Solution

The fourth proportional to 620,998.95, 931,498.43 and 620,998.95 is: 931,498.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,998.95 : 931,498.43 = 620,998.95 : x
  2. Step 2: Convert to fraction form
    620,998.95/931,498.43 = 620,998.95/x
  3. Step 3: Cross multiply
    620,998.95x = 931,498.43 × 620,998.95
  4. Step 4: Simplify right side
    620,998.95x = 578,459,543,851.65
  5. Step 5: Solve for x
    x = 578,459,543,851.65/620,998.95
  6. Step 6: Final answer
    x = 931,498.43

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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.