Home / 1,681,456-2,320,400.96-917,507.20

Finding the Fourth Proportional to 1,681,456, 2,320,400.96 and 917,507.20

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Solution

The fourth proportional to 1,681,456, 2,320,400.96 and 917,507.20 is: 1,266,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,456 : 2,320,400.96 = 917,507.20 : x
  2. Step 2: Convert to fraction form
    1,681,456/2,320,400.96 = 917,507.20/x
  3. Step 3: Cross multiply
    1,681,456x = 2,320,400.96 × 917,507.20
  4. Step 4: Simplify right side
    1,681,456x = 2,128,984,587,686.91
  5. Step 5: Solve for x
    x = 2,128,984,587,686.91/1,681,456
  6. Step 6: Final answer
    x = 1,266,155.40

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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.