Home / 1,187,783.16-1,638,755.12-671,487

Finding the Fourth Proportional to 1,187,783.16, 1,638,755.12 and 671,487

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Solution

The fourth proportional to 1,187,783.16, 1,638,755.12 and 671,487 is: 926,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,783.16 : 1,638,755.12 = 671,487 : x
  2. Step 2: Convert to fraction form
    1,187,783.16/1,638,755.12 = 671,487/x
  3. Step 3: Cross multiply
    1,187,783.16x = 1,638,755.12 × 671,487
  4. Step 4: Simplify right side
    1,187,783.16x = 1,100,402,759,263.44
  5. Step 5: Solve for x
    x = 1,100,402,759,263.44/1,187,783.16
  6. Step 6: Final answer
    x = 926,434.05

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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.