Home / 1,289,828.48-1,779,828-716,776.16

Finding the Fourth Proportional to 1,289,828.48, 1,779,828 and 716,776.16

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Solution

The fourth proportional to 1,289,828.48, 1,779,828 and 716,776.16 is: 989,075.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,828.48 : 1,779,828 = 716,776.16 : x
  2. Step 2: Convert to fraction form
    1,289,828.48/1,779,828 = 716,776.16/x
  3. Step 3: Cross multiply
    1,289,828.48x = 1,779,828 × 716,776.16
  4. Step 4: Simplify right side
    1,289,828.48x = 1,275,738,279,300.48
  5. Step 5: Solve for x
    x = 1,275,738,279,300.48/1,289,828.48
  6. Step 6: Final answer
    x = 989,075.91

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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.