Home / 1,105,130.76-1,525,168.98-621,667.08

Finding the Fourth Proportional to 1,105,130.76, 1,525,168.98 and 621,667.08

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Solution

The fourth proportional to 1,105,130.76, 1,525,168.98 and 621,667.08 is: 857,950.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,130.76 : 1,525,168.98 = 621,667.08 : x
  2. Step 2: Convert to fraction form
    1,105,130.76/1,525,168.98 = 621,667.08/x
  3. Step 3: Cross multiply
    1,105,130.76x = 1,525,168.98 × 621,667.08
  4. Step 4: Simplify right side
    1,105,130.76x = 948,147,346,303.18
  5. Step 5: Solve for x
    x = 948,147,346,303.18/1,105,130.76
  6. Step 6: Final answer
    x = 857,950.37

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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.