Home / 1,312,428.82-1,968,807.45-513,607.22

Finding the Fourth Proportional to 1,312,428.82, 1,968,807.45 and 513,607.22

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Solution

The fourth proportional to 1,312,428.82, 1,968,807.45 and 513,607.22 is: 770,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,428.82 : 1,968,807.45 = 513,607.22 : x
  2. Step 2: Convert to fraction form
    1,312,428.82/1,968,807.45 = 513,607.22/x
  3. Step 3: Cross multiply
    1,312,428.82x = 1,968,807.45 × 513,607.22
  4. Step 4: Simplify right side
    1,312,428.82x = 1,011,193,721,109.79
  5. Step 5: Solve for x
    x = 1,011,193,721,109.79/1,312,428.82
  6. Step 6: Final answer
    x = 770,475.10

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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.