Home / 1,681,458-2,320,403.72-917,509.20

Finding the Fourth Proportional to 1,681,458, 2,320,403.72 and 917,509.20

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Solution

The fourth proportional to 1,681,458, 2,320,403.72 and 917,509.20 is: 1,266,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,458 : 2,320,403.72 = 917,509.20 : x
  2. Step 2: Convert to fraction form
    1,681,458/2,320,403.72 = 917,509.20/x
  3. Step 3: Cross multiply
    1,681,458x = 2,320,403.72 × 917,509.20
  4. Step 4: Simplify right side
    1,681,458x = 2,128,991,760,814.22
  5. Step 5: Solve for x
    x = 2,128,991,760,814.22/1,681,458
  6. Step 6: Final answer
    x = 1,266,158.16

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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.