Home / 1,187,246.88-1,638,342-671,011.20

Finding the Fourth Proportional to 1,187,246.88, 1,638,342 and 671,011.20

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Solution

The fourth proportional to 1,187,246.88, 1,638,342 and 671,011.20 is: 925,962.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,246.88 : 1,638,342 = 671,011.20 : x
  2. Step 2: Convert to fraction form
    1,187,246.88/1,638,342 = 671,011.20/x
  3. Step 3: Cross multiply
    1,187,246.88x = 1,638,342 × 671,011.20
  4. Step 4: Simplify right side
    1,187,246.88x = 1,099,345,831,430.40
  5. Step 5: Solve for x
    x = 1,099,345,831,430.40/1,187,246.88
  6. Step 6: Final answer
    x = 925,962.28

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Double scale
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1.5x scale

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.