Home / 1,225,319.40-1,837,979.10-989,123.40

Finding the Fourth Proportional to 1,225,319.40, 1,837,979.10 and 989,123.40

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Solution

The fourth proportional to 1,225,319.40, 1,837,979.10 and 989,123.40 is: 1,483,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,319.40 : 1,837,979.10 = 989,123.40 : x
  2. Step 2: Convert to fraction form
    1,225,319.40/1,837,979.10 = 989,123.40/x
  3. Step 3: Cross multiply
    1,225,319.40x = 1,837,979.10 × 989,123.40
  4. Step 4: Simplify right side
    1,225,319.40x = 1,817,988,136,520.94
  5. Step 5: Solve for x
    x = 1,817,988,136,520.94/1,225,319.40
  6. Step 6: Final answer
    x = 1,483,685.10

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Double scale
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Similar ratio
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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.