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Finding the Fourth Proportional to 876,347.40, 1,314,002.70 and 456,443.40

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Solution

The fourth proportional to 876,347.40, 1,314,002.70 and 456,443.40 is: 684,395.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,347.40 : 1,314,002.70 = 456,443.40 : x
  2. Step 2: Convert to fraction form
    876,347.40/1,314,002.70 = 456,443.40/x
  3. Step 3: Cross multiply
    876,347.40x = 1,314,002.70 × 456,443.40
  4. Step 4: Simplify right side
    876,347.40x = 599,767,859,997.18
  5. Step 5: Solve for x
    x = 599,767,859,997.18/876,347.40
  6. Step 6: Final answer
    x = 684,395.09

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.