Home / 1,210,312.40-1,670,165-666,344.91

Finding the Fourth Proportional to 1,210,312.40, 1,670,165 and 666,344.91

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Solution

The fourth proportional to 1,210,312.40, 1,670,165 and 666,344.91 is: 919,519.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,312.40 : 1,670,165 = 666,344.91 : x
  2. Step 2: Convert to fraction form
    1,210,312.40/1,670,165 = 666,344.91/x
  3. Step 3: Cross multiply
    1,210,312.40x = 1,670,165 × 666,344.91
  4. Step 4: Simplify right side
    1,210,312.40x = 1,112,905,946,610.15
  5. Step 5: Solve for x
    x = 1,112,905,946,610.15/1,210,312.40
  6. Step 6: Final answer
    x = 919,519.58

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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.