Home / 1,210,313.40-1,670,166.39-666,345.90

Finding the Fourth Proportional to 1,210,313.40, 1,670,166.39 and 666,345.90

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Solution

The fourth proportional to 1,210,313.40, 1,670,166.39 and 666,345.90 is: 919,520.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,313.40 : 1,670,166.39 = 666,345.90 : x
  2. Step 2: Convert to fraction form
    1,210,313.40/1,670,166.39 = 666,345.90/x
  3. Step 3: Cross multiply
    1,210,313.40x = 1,670,166.39 × 666,345.90
  4. Step 4: Simplify right side
    1,210,313.40x = 1,112,908,526,294.30
  5. Step 5: Solve for x
    x = 1,112,908,526,294.30/1,210,313.40
  6. Step 6: Final answer
    x = 919,520.95

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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.