Home / 783,151.09-1,078,726.98-553,309.39

Finding the Fourth Proportional to 783,151.09, 1,078,726.98 and 553,309.39

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Solution

The fourth proportional to 783,151.09, 1,078,726.98 and 553,309.39 is: 762,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,151.09 : 1,078,726.98 = 553,309.39 : x
  2. Step 2: Convert to fraction form
    783,151.09/1,078,726.98 = 553,309.39/x
  3. Step 3: Cross multiply
    783,151.09x = 1,078,726.98 × 553,309.39
  4. Step 4: Simplify right side
    783,151.09x = 596,869,767,280.34
  5. Step 5: Solve for x
    x = 596,869,767,280.34/783,151.09
  6. Step 6: Final answer
    x = 762,138.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.