Home / 813,058.08-1,219,356.64-513,089.28

Finding the Fourth Proportional to 813,058.08, 1,219,356.64 and 513,089.28

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Solution

The fourth proportional to 813,058.08, 1,219,356.64 and 513,089.28 is: 769,488.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,058.08 : 1,219,356.64 = 513,089.28 : x
  2. Step 2: Convert to fraction form
    813,058.08/1,219,356.64 = 513,089.28/x
  3. Step 3: Cross multiply
    813,058.08x = 1,219,356.64 × 513,089.28
  4. Step 4: Simplify right side
    813,058.08x = 625,638,820,480.82
  5. Step 5: Solve for x
    x = 625,638,820,480.82/813,058.08
  6. Step 6: Final answer
    x = 769,488.47

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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.