Home / 919,712.90-1,378,641.97-578,400.26

Finding the Fourth Proportional to 919,712.90, 1,378,641.97 and 578,400.26

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Solution

The fourth proportional to 919,712.90, 1,378,641.97 and 578,400.26 is: 867,017.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,712.90 : 1,378,641.97 = 578,400.26 : x
  2. Step 2: Convert to fraction form
    919,712.90/1,378,641.97 = 578,400.26/x
  3. Step 3: Cross multiply
    919,712.90x = 1,378,641.97 × 578,400.26
  4. Step 4: Simplify right side
    919,712.90x = 797,406,865,555.70
  5. Step 5: Solve for x
    x = 797,406,865,555.70/919,712.90
  6. Step 6: Final answer
    x = 867,017.16

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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.