Home / 1,312,805.61-1,968,420.96-513,134.51

Finding the Fourth Proportional to 1,312,805.61, 1,968,420.96 and 513,134.51

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Solution

The fourth proportional to 1,312,805.61, 1,968,420.96 and 513,134.51 is: 769,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,805.61 : 1,968,420.96 = 513,134.51 : x
  2. Step 2: Convert to fraction form
    1,312,805.61/1,968,420.96 = 513,134.51/x
  3. Step 3: Cross multiply
    1,312,805.61x = 1,968,420.96 × 513,134.51
  4. Step 4: Simplify right side
    1,312,805.61x = 1,010,064,714,941.22
  5. Step 5: Solve for x
    x = 1,010,064,714,941.22/1,312,805.61
  6. Step 6: Final answer
    x = 769,393.97

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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.